Najm Al-Din Razi 
Path of God’s Bondsmen from Origin to Return [translated] [EPUB ebook] 

As unusually comprehensive survey of the main concerns of Sufism, The Path of God’s Bondsmen from Origin to Return is a summation of the Sufi tradition as it had developed by the seventh/thirteenth century. It first discussed the theoretical bases of Sufism, showing in conclusive detail their grounding in the Qur’an and the exemplary model of the Prophet Muhammad. It then turns to an examination of man’s inner morphology – the soul, the heart, and the spirit – the means of advancement on the Sufi path, and the supra-sensory phenomena that accompany spiritual progress. The work concludes with a section on the wayfaring of different classes, valuable for the light it sheds on the structure of classical Perso-Muslim society.