Data on known Dagestan religious and political figure of the 19th century - the Sufi Sheikh Abdurakhman-Haji as-Suguri - found in the Arabic collection of Sufi biographies “Khikaya va manaqib al-Mashaikh an-naqshbandiyina” by Sharafaddin al-Kikuni are considered. The authors of the article translated the fragments of the section of this work. On the example of the analysis of this information, an attempt is made to study the biography of a famous historical figure in the context of the narrative about the surreal events that took place in his life. In the course of work on the text, details are revealed that clarify previously known facts from the biography of a famous religious figure who played an important role in the spread of Sufism ideology in Dagestan. The authors raise the question of the expediency of using the revealed information in research works as a historical source. The textual, historical and philological analysis of the above-mentioned work by Sheikh Sharafaddin al-Kikuni is carried out. Attention is paid to the interpretation of the hagiographic components of the Sufi text, which are closely intertwined with well-known episodes from the biography of Abdurahman-Haji as-Suguri. The researchers conclude that the information about Sheikh as-Sughuri, given in the collection, deserve the attention of experts in various fields of humanitarian knowledge: philologists, historians, religious scholars, ethnographers, etc. Its consideration is important for the study of social, religious and cultural life of Dagestan society of the late 19th - early 20th centuries.