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)."