Kashf al-Mahjub

Kashf al-Mahjub (Persian: كَشف الْمَحجُوب, romanized: Kashf al-Maḥjūb, lit. 'Revelation of the Hidden') was the first formal treatise on Sufism, compiled in the 11th century by the Persian scholar al-Hujwiri. The work contains a complete system of Sufism with its doctrines and practices. Mystical controversies and current opinions are illustrated where many are clarified by presenting his experiences. The book with its Persian flavor of philosophical speculation and fiction is itself a piece of the identity of al-Hujwiri (also known as Data Ganj Baksh).