'Ali ibn Husain Safi , the author of the Rashahat, lived in the beginning of the 10th Century AH. He was brother-in-law of the famous mystic and poet Jami who gave him the name 'Safi'. In the Rashahat 'Ain al-Hayat, Safi gives an account of the lives and teachings of a group of Sufi mystics known as the Khwajagan - the Masters of Wisdom. The Khwajagan lived in Central Asia between the 4th and the 9th centuries Hijri. The ranks of the Khwajagan include the great sufis 'Abd al-Khaliq al-Ghujdawani and Baha' al-Din Naqshband, who gave his name to the Naqshbandi order, though he did not found it. The many branches of the Naqshbandiyya survive to this day. This book is the first translation of the Rashahat into English and provides the present generation with clear and precise biographies of the great and genuine sufis who emerged in Turkestan at a most significant period.