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Yusuf al-Hamadani The Sufi Site of Turkmenistan

Yusuf al-Hamadani Mausoleum, also known as the Khoja Yusuf Hamadani Mosque and Shrine, is an important Sufi heritage and pilgrimage site at Ancient Merv in Mary Province, Turkmenistan. The shrine is associated with Abū Yaʿqūb Yūsuf ibn Ayyūb al-Hamadānī, one of the most influential Sufi masters of the 11th and 12th centuries and a major figure in the development of Central Asian Sufism.

Yusuf al-Hamadani lived during a formative period in the history of Islamic scholarship and spirituality. Born near Hamadan in Persia around 1048–1049 CE, he studied Islamic jurisprudence and Hadith before turning increasingly toward Sufi spirituality. He eventually established a khanqah, or Sufi lodge, in Merv, where he taught disciples and attracted both scholars and spiritual seekers.

His legacy is especially important because four celebrated disciples are associated with his spiritual lineage: Abdullah al-Barqi, Hasan al-Andaqi, Ahmad Yasavi and Abd al-Khaliq al-Ghijduwani. Through these figures, his influence became connected with two major Central Asian Sufi traditions, the Yasaviyya and the Khwajagan, the latter eventually becoming closely associated with the Naqshbandiyya.

Today, the shrine remains a place of pilgrimage. Turkmenistan’s official sources state that the functioning Yusuf Hamdani Mosque at Ancient Merv is visited by pilgrims from Turkmenistan and neighboring countries.

Who Was Yusuf al-Hamadani?

Abū Yaʿqūb Yūsuf ibn Ayyūb al-Hamadānī was a Persian-born Muslim scholar and Sufi master whose life connected the great intellectual centers of the medieval Islamic world with the emerging Sufi traditions of Central Asia.

He was born in Buzanjird near Hamadan, in present-day Iran, around 440 AH / 1048–1049 CE. At about the age of eighteen, he travelled to Baghdad, one of the most important centers of Islamic learning at the time. There he studied fiqh and Hadith under prominent scholars, including Abū Isḥāq al-Shīrāzī.

His early education was therefore firmly rooted in the traditional Islamic sciences.

Later, Yusuf al-Hamadani became increasingly devoted to Sufism, studying under spiritual teachers including Abū ʿAlī al-Fārmadī, who was also associated with the spiritual education of the famous theologian and mystic Abū Ḥāmid al-Ghazālī.

This combination of scholarship and spirituality became one of the defining characteristics of Yusuf al-Hamadani’s teaching.

Yusuf al-Hamadani’s Early Life and Education

Yusuf al-Hamadani’s intellectual journey began with the classical Islamic sciences.

His education included:

• Qur’anic and religious studies
• Hadith
• Islamic jurisprudence
• Arabic and religious scholarship
• Sufi spiritual discipline

His early association with Baghdad was particularly important because the city was one of the leading intellectual centers of the medieval Muslim world.

Rather than abandoning Islamic scholarship when he entered the Sufi path, Yusuf al-Hamadani incorporated spirituality into a framework strongly rooted in Qur’an, Sunnah and Islamic law.

Encyclopaedia Iranica emphasizes that his conception of Sufism placed strong importance on the Qur’an and Sunnah and insisted upon observance of the sharia.

Yusuf al-Hamadani and Merv

The most important chapter of Yusuf al-Hamadani’s life in relation to modern Turkmenistan began when he established himself in Merv.

Medieval Merv was one of the great cities of Central Asia. Situated along major routes connecting Iran, Central Asia, Afghanistan and the wider Islamic world, it became an important center of scholarship, commerce and culture.

Yusuf al-Hamadani established a khanqah in Merv, where he conducted spiritual instruction.

According to the TDV Islamic Encyclopedia, his lodge became known as the “Kaaba of Khorasan”, reflecting its importance as a destination for Sufis and scholars.

His khanqah was not simply a retreat for mystics.

It became a center where religious scholarship, spiritual training and public guidance came together.

The “Kaaba of Khorasan”

The title “Kaaba of Khorasan” traditionally associated with Yusuf al-Hamadani’s khanqah reflects the high reputation the institution acquired.

The comparison was symbolic rather than a claim that the lodge had the same religious status as the Kaaba in Mecca.

It indicated the importance of the Merv center within the spiritual geography of Khorasan.

Sufis, scholars and students were attracted to Yusuf al-Hamadani because of his reputation for combining Islamic scholarship with disciplined spiritual practice.

Yusuf al-Hamadani’s Sufi Philosophy

Yusuf al-Hamadani represented a form of Sufism strongly connected with Islamic law and orthodox religious practice.

He emphasized that spiritual development should not become separated from the Qur’an and Sunnah.

This was an important characteristic of his teaching.

Rather than treating mystical experience as an independent source of religious authority, his approach placed spiritual discipline within the framework of Islamic obligations.

Encyclopaedia Iranica describes his spirituality as emphasizing the Qur’an and Sunnah as the foundation of Sufi practice, together with strict observance of Islamic law.

This approach would become highly influential in later Central Asian Sufi traditions.

Yusuf al-Hamadani and His Disciples

Perhaps the greatest measure of Yusuf al-Hamadani’s influence is found in the disciples associated with his spiritual lineage.

Four names are particularly important:

Abdullah al-Barqi

Abdullah al-Barqi was one of the disciples traditionally associated with Yusuf al-Hamadani and his succession.

Hasan al-Andaqi

Hasan al-Andaqi was another important successor within the early spiritual chain.

Ahmad Yasavi

Ahmad Yasavi became one of the most influential Sufi figures among Turkic-speaking peoples of Central Asia.

The Sufi tradition associated with him became known as the Yasaviyya, which played an important role in the spread and development of Islamic spirituality among Turkic populations.

Abd al-Khaliq al-Ghijduwani

Abd al-Khaliq al-Ghijduwani became one of the foundational figures in the Khwajagan tradition.

This spiritual lineage eventually became closely associated with the later Naqshbandiyya, one of the world’s most influential Sunni Sufi traditions.

Through these disciples, Yusuf al-Hamadani’s influence extended far beyond Merv.

Yusuf al-Hamadani and Ahmad Yasavi

The relationship between Yusuf al-Hamadani and Ahmad Yasavi is particularly important in Central Asian Sufi history.

Ahmad Yasavi became a major spiritual authority among Turkic-speaking communities, and the tradition connecting him with Yusuf al-Hamadani became an important part of the history of the Yasaviyya.

This makes the Merv shrine significant not only for followers interested in Yusuf al-Hamadani himself but also for people studying the origins of Turkic Sufi traditions.

The influence of Yusuf al-Hamadani therefore crossed linguistic and regional boundaries.

His spiritual legacy moved from Khorasan and Transoxiana into the wider Turkic world.

Yusuf al-Hamadani and the Naqshbandi Tradition

Yusuf al-Hamadani is also considered a major early predecessor of the Naqshbandi tradition.

Encyclopaedia Iranica describes him as the first of the Khwajagan, the line of Central Asian masters from which the Naqshbandi and Yasavi traditions later developed.

The connection is particularly strong through Abd al-Khaliq al-Ghijduwani, one of his principal disciples.

The later Naqshbandi tradition became one of the most widespread Sunni Sufi orders, extending from Central Asia into South Asia, the Middle East, the Caucasus and other regions.

Yusuf al-Hamadani therefore occupies an important place near the beginning of one of the most influential spiritual lineages in Islamic history.

Yusuf al-Hamadani’s Teaching on Sharia and Sufism

A major characteristic of Yusuf al-Hamadani’s spirituality was the integration of Sufi practice with Islamic law.

His approach rejected the idea that spiritual experience could justify abandoning religious obligations.

Instead, the spiritual path was expected to deepen obedience, humility and awareness of God.

This principle later became particularly important among Central Asian Sufi traditions.

His legacy demonstrates that the history of Sufism cannot simply be understood as a movement away from Islamic law.

For many influential Sufi masters, spiritual purification and adherence to the Qur’an and Sunnah were inseparable.

Yusuf al-Hamadani’s Travels

Yusuf al-Hamadani travelled extensively during his lifetime.

His intellectual and spiritual journey took him to places including:

• Baghdad
• Isfahan
• Samarqand
• Bukhara
• Herat
• Merv

Encyclopaedia Iranica notes that he also travelled to Herat and spent periods in Bukhara and Samarqand.

These travels were important because Central Asia was not an isolated religious world.

Scholars and Sufi teachers moved between cities, creating networks through which ideas, texts, students and spiritual traditions circulated.

Yusuf al-Hamadani became one of the major figures connecting these intellectual and spiritual centers.

Yusuf al-Hamadani and Merv’s Golden Age

Yusuf al-Hamadani lived during a period when Merv was becoming one of the most important cities of the medieval Islamic world.

Under the Seljuk rulers, Merv became a major political and intellectual center.

Turkmenistan’s official historical materials emphasize the city’s extraordinary importance during the Seljuk period and identify the monuments of medieval Merv as major evidence of its cultural and architectural history.

Yusuf al-Hamadani’s presence in Merv therefore occurred during one of the city’s most significant periods.

His khanqah became part of the religious landscape of a city already known for scholarship, trade and culture.

The Death of Yusuf al-Hamadani

Yusuf al-Hamadani died in 535 AH / 1140 CE.

The circumstances and location of his death are described differently in historical sources.

According to the account summarized by Encyclopaedia Iranica, he died at Bāmyīn while travelling from Herat toward Merv. His body was temporarily buried there and later transferred to Merv.

The TDV Islamic Encyclopedia gives the date as 22 Rabi al-Awwal 535 AH / 5 November 1140 CE, stating that he died near Bāmeīn while returning from Herat to Merv and was later transferred to Merv.

This explains why his shrine is now associated with the Merv region.

Where Is Yusuf al-Hamadani Buried?

The tomb traditionally identified with Yusuf al-Hamadani is located near Merv, in the area of present-day Bayramaly, Turkmenistan.

The TDV Islamic Encyclopedia states that his grave is now located near Merv in the Bayramaly area and functions as a place of visitation.

UNESCO’s documentation for Ancient Merv also identifies the Yusuf Hamdani monument within the archaeological and architectural heritage zone.

The shrine therefore connects a living religious tradition with one of Central Asia’s most important archaeological landscapes.

Yusuf al-Hamadani Mausoleum at Ancient Merv

The shrine is situated within the wider historical landscape of Ancient Merv.

UNESCO’s documentation identifies the Mausoleum and Mosque of Yusuf Hamdani as part of the Merv heritage complex.

The site has undergone restoration and rebuilding over time.

Its importance therefore cannot be judged solely by the present appearance of the buildings. The location represents a long historical continuity between the medieval city of Merv and the living pilgrimage tradition associated with Yusuf al-Hamadani.

The Yusuf Hamadani Mosque

The religious complex includes a mosque associated with the tomb.

Turkmenistan’s official sources describe the Yusuf Hamdani Mosque as a functioning mosque visited by pilgrims from across Turkmenistan and neighboring countries.

This gives the site a living religious role.

It is not merely an archaeological monument visited for historical interest.

Muslims continue to associate the location with the memory of one of the great Sufi masters of Central Asia.

Yusuf al-Hamadani as a Pilgrimage Site

The shrine is an important ziyarah, or visitation, destination.

Pilgrims visit the site to pray, remember Yusuf al-Hamadani and connect with the spiritual heritage of Merv.

Official Turkmen sources specifically state that the functioning mosque is visited by pilgrims from Turkmenistan and neighboring countries.

The shrine therefore forms part of a wider network of Islamic sacred places across Central Asia.

Pilgrimage and Sufi Heritage in Merv

Merv contains several historic Islamic monuments and sacred sites.

Among them are:

• Yusuf Hamadani Mosque and Mausoleum
• Mausoleum of Sultan Sanjar
• Mausoleum of Muhammad ibn Zayd
• Mausoleum of Ahmad Zamji
• Askhab monuments
• Talkhattan Baba Mosque
• Other medieval religious structures

UNESCO recognizes Ancient Merv as a major archaeological and cultural landscape, while Turkmen sources emphasize its continuing religious significance.

Yusuf al-Hamadani’s shrine is therefore part of a much larger Islamic heritage environment.

Ancient Merv and the History of Islam

Ancient Merv has an exceptionally long history.

The city existed for centuries before Islam and later became an important center of Islamic civilization.

Turkmenistan’s official historical account notes that Islam became dominant in Merv after the Arab expansion and that the city later reached extraordinary importance under the Seljuks.

By Yusuf al-Hamadani’s lifetime, Merv was already a major center of Islamic scholarship.

His presence added another dimension to the city’s religious identity: Sufi spirituality and spiritual education.

The Importance of Yusuf al-Hamadani’s Shrine

The shrine is important for several reasons.

Sufi Heritage

It preserves the memory of a major early Central Asian Sufi master.

Islamic Scholarship

Yusuf al-Hamadani was trained in Hadith and jurisprudence before becoming a major Sufi teacher.

Central Asian Sufism

His disciples became foundational figures in major Sufi traditions.

Merv’s History

His khanqah and tomb connect his biography directly with one of the greatest cities of medieval Central Asia.

Pilgrimage

The mosque and shrine continue to attract Muslim pilgrims.

UNESCO Heritage

The monument forms part of the wider Ancient Merv World Heritage Site.

Yusuf al-Hamadani and the Development of Central Asian Sufism

The importance of Yusuf al-Hamadani extends far beyond his lifetime.

His disciples helped transmit a spiritual tradition that developed into major Sufi lineages.

The Yasaviyya became particularly influential among Turkic peoples.

The Khwajagan tradition later provided an important foundation for the Naqshbandiyya.

This makes Yusuf al-Hamadani an important link between Persianate Islamic scholarship, Khorasani Sufism and Central Asian Turkic spirituality.

Yusuf al-Hamadani’s Religious Approach

Yusuf al-Hamadani’s approach to Sufism can be characterized by several principles:

• Strong adherence to Islamic law
• Reliance on the Qur’an and Sunnah
• Spiritual discipline
• Humility
• Religious scholarship
• Ethical purification
• Training of disciples
• Rejection of uncontrolled mystical excess

The Turkish Maarif Encyclopedia describes him as favoring a spiritual training firmly tied to religious and legal principles and notes his opposition to excessive ecstatic expressions.

This aspect of his legacy is particularly important when understanding why later Central Asian Sufi traditions often emphasized disciplined spiritual practice.

Yusuf al-Hamadani and Religious Scholarship

• Yusuf al-Hamadani did not begin his career solely as a mystic.
• He was a respected scholar of fiqh and Hadith.
• His early education in Baghdad placed him within the mainstream intellectual traditions of medieval Islam before his later development as a Sufi master.
• This background shaped his approach to spirituality.
• His Sufism was therefore closely connected with formal Islamic learning rather than separated from it.

Did Yusuf al-Hamadani Write Books?

Several works have been attributed to Yusuf al-Hamadani, including a commentary on Abdullah al-Ansari’s Manazil al-Sa’irin.

However, Encyclopaedia Iranica notes that the works attributed to him do not appear to survive in a clearly established form.

This is another example of why historical articles should distinguish between works attributed to a Sufi master and texts whose authorship can be firmly established.

His greatest surviving legacy is therefore arguably found in his spiritual lineage and disciples rather than in a large surviving corpus of books.

Yusuf al-Hamadani and the Spread of Sufism

The influence of Yusuf al-Hamadani demonstrates how Sufism spread through networks of teachers and disciples.

A Sufi master could establish a lodge, train students and appoint successors.

Those disciples then travelled to other cities and established their own circles.

Over generations, these networks became organized spiritual traditions.

Yusuf al-Hamadani’s connection to Ahmad Yasavi and Abd al-Khaliq al-Ghijduwani demonstrates how one master’s teaching could influence very different regional traditions.

Yusuf al-Hamadani and Ahmad Yasavi’s Legacy

The relationship between Yusuf al-Hamadani and Ahmad Yasavi is especially significant for the history of Islam among Turkic peoples.

Ahmad Yasavi’s later spiritual tradition became strongly associated with Turkic-language devotional culture.

His influence reached communities across Central Asia and beyond.

Because Ahmad Yasavi is traditionally connected with Yusuf al-Hamadani’s spiritual lineage, the shrine at Merv can be understood as one of the important historical locations in the background of Yasavi Sufism.

Yusuf al-Hamadani and Abd al-Khaliq al-Ghijduwani

The second major branch of his legacy runs through Abd al-Khaliq al-Ghijduwani.

Ghijduwani became a central figure in the Khwajagan tradition, which emphasized disciplined spiritual practice and, according to later tradition, silent dhikr.

This lineage eventually became connected with the Naqshbandiyya.

Consequently, Yusuf al-Hamadani stands near the beginning of a spiritual chain that later influenced Muslims from Central Asia to South Asia and beyond.

The Architectural and Historical Setting

The Yusuf Hamadani shrine should not be considered in isolation.

It stands within the extraordinary archaeological environment of Ancient Merv, where layers of settlement preserve thousands of years of Central Asian history.

UNESCO identifies the Yusuf Hamdani monument among the important structures within the Merv World Heritage property.

For visitors, this means that a pilgrimage to Yusuf al-Hamadani can also become an encounter with the history of one of the great cities of the medieval Islamic world.

Yusuf al-Hamadani Mausoleum and Modern Pilgrimage

Despite the destruction and transformation of medieval Merv, the memory of Yusuf al-Hamadani remains alive.

The mosque continues to function as a place of worship, and Turkmenistan’s official sources specifically mention pilgrims visiting the site from throughout the country and neighboring states.

This continuity is one of the most remarkable aspects of the site.

The physical city of medieval Merv changed dramatically, but the spiritual association with Yusuf al-Hamadani survived.

Visiting Yusuf al-Hamadani Shrine

The shrine is located within the Ancient Merv archaeological zone, near the modern city of Bayramaly in Mary Province.

Because it lies within a protected heritage landscape, visitors should follow the rules applicable to the archaeological site and religious complex.

The site can be incorporated into a broader visit to Ancient Merv, where travelers can explore the remains of the medieval city and its numerous monuments.

For Muslim visitors, the Yusuf Hamadani shrine offers an opportunity to combine historical exploration with spiritual pilgrimage.

Religious Etiquette at the Shrine

Visitors should remember that the Yusuf Hamadani complex is a living religious site, not merely an archaeological attraction.

Appropriate behavior includes:

• Dressing modestly
• Respecting worshippers
• Following local mosque rules
• Avoiding disruptive photography
• Keeping the site clean
• Respecting graves and sacred spaces
• Following instructions from local authorities or religious staff

Non-Muslim visitors should also check current access rules before planning a visit, as policies concerning religious sites can change.

Yusuf al-Hamadani and the Broader History of Merv

The shrine illustrates how Merv’s history was shaped not only by kings and armies but also by scholars, religious teachers and spiritual communities.

Merv was a city of political power, trade and scholarship, but it was also a major center of Islamic religious life.

Yusuf al-Hamadani’s presence represents the spiritual dimension of this history.

His khanqah brought together students and seekers, while his disciples carried his teachings into other parts of Central Asia.

Why Yusuf al-Hamadani Is Important Today

Yusuf al-Hamadani remains important because his legacy connects several major dimensions of Islamic history.

He represents:

• Islamic scholarship through his study of Hadith and jurisprudence.
• Sufism through his spiritual training and khanqah.
• Central Asian history through his long association with Merv.
• Yasavi tradition through Ahmad Yasavi.
• Khwajagan and Naqshbandi history through Abd al-Khaliq al-Ghijduwani.
• Pilgrimage culture through his shrine at Ancient Merv.

Few medieval Sufi figures provide such a clear connection between these different strands of Islamic history.

Key Facts About Yusuf al-Hamadani Mausoleum

Frequently Asked Questions About Yusuf al-Hamadani

Who was Yusuf al-Hamadani?

Yusuf al-Hamadani was an influential 11th–12th-century Muslim scholar and Sufi master who became one of the most important figures in the development of Central Asian Sufism.

What was Yusuf al-Hamadani’s full name?

His full name is given as Abū Yaʿqūb Yūsuf ibn Ayyūb al-Hamadānī.

When was Yusuf al-Hamadani born?

He was born around 440 AH / 1048–1049 CE near Hamadan.

When did Yusuf al-Hamadani die?

He died in 535 AH / 1140 CE. The TDV Islamic Encyclopedia gives the date as 5 November 1140.

Where is Yusuf al-Hamadani buried?

His tomb is traditionally located near Merv in the Bayramaly area of present-day Turkmenistan.

Where is the Yusuf al-Hamadani Mausoleum?

It is located within the historical landscape of Ancient Merv in Mary Province, Turkmenistan. UNESCO identifies the Yusuf Hamdani monument within the Ancient Merv World Heritage property.

Is Yusuf al-Hamadani Mausoleum a pilgrimage site?

Yes. Turkmenistan’s official sources state that the functioning Yusuf Hamdani Mosque is visited by pilgrims from Turkmenistan and neighboring countries.

Was Yusuf al-Hamadani a Sufi?

Yes. He was a major Sufi master whose teachings strongly emphasized the Qur’an, Sunnah, Islamic law and spiritual discipline.

Who were Yusuf al-Hamadani’s most famous disciples?

Four particularly famous disciples associated with his lineage are Ahmad Yasavi, Abd al-Khaliq al-Ghijduwani, Abdullah al-Barqi and Hasan al-Andaqi.

What is Yusuf al-Hamadani famous for?

He is especially famous for his role in the development of Central Asian Sufism and for being an important predecessor of the Yasavi and Naqshbandi-related spiritual traditions.

What was Yusuf al-Hamadani’s connection with Merv?

He established a khanqah in Merv that became an important center of Sufi teaching and was traditionally called the “Kaaba of Khorasan.”

Did Yusuf al-Hamadani teach Ahmad Yasavi?

Ahmad Yasavi is traditionally counted among Yusuf al-Hamadani’s leading disciples and successors, forming an important link in the development of the Yasavi Sufi tradition.

Did Yusuf al-Hamadani influence the Naqshbandi order?

Yes. He is regarded as an early master in the Khwajagan lineage, which later became closely associated with the Naqshbandiyya through figures such as Abd al-Khaliq al-Ghijduwani.

Is the Yusuf Hamadani shrine part of UNESCO’s Ancient Merv?

Yes. UNESCO’s documentation identifies the Yusuf Hamdani monument within the Ancient Merv World Heritage property.

Is the Yusuf Hamadani Mosque still active?

Yes. Turkmenistan’s official sources describe it as an operating mosque that continues to receive pilgrims.

Why is Yusuf al-Hamadani important in Islamic history?

His importance comes from the combination of Islamic scholarship, Sufi spirituality, teaching and spiritual succession. His disciples transmitted his influence across Central Asia and into later Sufi traditions.

Conclusion

Yusuf al-Hamadani Mausoleum is one of the important Sufi pilgrimage sites of Ancient Merv in Mary Province, Turkmenistan. The shrine preserves the memory of Abū Yaʿqūb Yūsuf ibn Ayyūb al-Hamadānī, a major Sufi master who lived during the Seljuk period and made Merv one of the principal centers of his spiritual activity.

Yusuf al-Hamadani’s historical importance extends far beyond his tomb. His teaching combined Islamic scholarship, adherence to the Qur’an and Sunnah, jurisprudence and disciplined spiritual practice. His khanqah in Merv became an important center of religious life, while his disciples carried his spiritual legacy across Central Asia.

His connection with Ahmad Yasavi links him with the development of Yasavi Sufism among Turkic peoples, while his relationship with Abd al-Khaliq al-Ghijduwani places him near the beginning of the Khwajagan tradition that later became closely associated with the Naqshbandiyya.

Today, the Yusuf Hamadani Mosque and shrine remain part of the living religious landscape of Ancient Merv. Pilgrims continue to visit the site, while its inclusion within the UNESCO-recognized Merv heritage landscape gives it exceptional historical significance.

For anyone interested in Sufism, Islamic history, Central Asian spirituality, medieval Merv or the origins of major Sufi traditions, Yusuf al-Hamadani’s shrine offers a remarkable connection between the religious life of the medieval Islamic world and the living heritage of modern Turkmenistan.

Sources and Further Reading

1. Encyclopaedia Iranica — “Abū Yaʿqūb Hamadānī,” by Hamid Algar. A major scholarly source covering Yusuf al-Hamadani’s life, education, Sufi teachers, Merv khanqah, disciples, death and influence.

2. TDV İslâm Ansiklopedisi — “Yûsuf el-Hemedânî.” A detailed scholarly biography covering his Sufi education, Merv activities, disciples, death and tomb near Bayramaly.

3. UNESCO World Heritage Centre — Ancient Merv. UNESCO documentation identifies the Yusuf Hamdani monument within the Ancient Merv World Heritage property.

4. Government of Turkmenistan — Ancient Merv. Official information about Merv’s history and the continuing operation of the Yusuf Hamdani Mosque as a pilgrimage destination.

5. Türk Maarif Ansiklopedisi — Yusuf Hemedânî. Provides additional scholarly information about his spiritual teachings, disciples and relationship with later Central Asian Sufi traditions.