The Shaykh informed me, saying: Ahmad ibn Muhammad reported to me, from his father, from al-Husayn ibn al-Hasan ibn Aban, from al-Husayn ibn Saʿid, from Fadalah, from Hammad ibn ʿUthman, from Ali ibn Abi al-Mughirah, from Maysar, from Abu Jaʿfar عليه السلام, who said: Imam عليه السلام said: "Ablution (Wuduʾ) is one" and Imam عليه السلام described the ankle (Kaʿb) as being on the top of the foot.