Chapter on Rules of Janabah and Methods of Purification

Narrated with this chain of narration, from Muhammad ibn Ahmad ibn Yahya, from Abu Ja'far, from his father, from Zur'ah, from Sama'ah, who said: I asked Imam عليه السلام about the amount of water sufficient for ghusl. Imam عليه السلام said: "The Messenger of Allah سبحانه وتعالى performed ghusl with a sa‘ of water and performed wudu with a mudd. The sa‘ during his time was five pounds (artal), and the mudd was equivalent to a pound and three ounces (awaq)."