Savior From Error - Al Munqid minad-Dalal by Imam al Ghazali (RA)
This is the 'spiritual autobiography' of the great Imam al-Ghazali, and describes what caused him to leave fame and fortune to undertake the spiritual path of the Sufis. In it, besides providing a personal history and describing the key events which led to this and flowed from it, Imam al-Ghazali takes time to repudiate the methods and logic of the philosophers and the esotericists (batiniyya) and the principles of sophistry. Lastly he provides a section on the Reality of Prophethood and the urgent need all people have for it. This is a book that contains much of value to the genuine seeker of Truth.