In this book, the course of life and a spiritual heritage of great pirs like Abdulkholik Gijduvani, Orif Revgari, Makhmud Anjir Faghnavi, Khoja Ali Rometani, Makhmud Boboi Samosi, Amir Kulol, and Bahauddin Naqshband reveals on the basis of authentic sources. The book is intended for an audience consisting of readers engaged in history and a source study of Islam, researchers of the Sufism doctrine and the public at large.