A book on the science of Sufism by Imam Abd al-Wahhab al-Sha'rani, in which he expounds upon the authentic, Shari'ah-compliant sciences of Sufism. He clarifies the true identity of the Sufi—and of Sufis collectively—delineating the distinctive knowledge, moral character, and exemplary conduct by which they are distinguished, as well as the spiritual stances and principles prescribed by Islamic Shari'ah.