The Fay’, al-Anfal, al-Khums, its rules and the properties subject to al-Khums

16. Ali ibn Ibrahim has narrated from his father from ibn Mahbub from Durays al-Kunnas who has said the following. “Abu ‘Abdallah عليه السلام said, “Why people get the course of adultery?” I said, “I do not know, May Allah take my soul in service for your cause.” He said, “It is because of not paying our al-Khums (one fifth religious dues) except our pure Shi‘a. It helps cleans their birth.”