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

6. A number of our people has narrated Ahmad ibn Muhammad from Ali ibn al-Hakam from Ali ibn abu Hamza from Muhammad ibn Muslim who has said the following. “Al-Anfal means al-Nafl (optional). In this chapter, al-Anfal, stands the amputation of the nose (of enemies and proof of their humiliation).”