Through the same chain of transmission, from al-Husayn ibn Saʿid, from Ahmad ibn Hamzah and al-Qasim ibn Muhammad, from Aban ibn ʿUthman, from Maysar, from Abu Jaʿfar عليه السلام, who said: Imam عليه السلام said: "Shall I demonstrate to you the ablution (Wuduʾ) of the Messenger of Allah سبحانه وتعالى (peace and blessings be upon him and his family)?" Imam عليه السلام then took a handful of water and poured it over his face. Then, Imam عليه السلام took another handful and poured it over his arm. Imam عليه السلام then took another handful and poured it over his other arm. After that, Imam عليه السلام wiped his head and his feet. Imam عليه السلام placed his hand on the top of his foot and said: "This is the ankle (Kaʿb).” Imam عليه السلام then gestured with his hand to the lower part of the heel and said: "This is the shinbone (Zunbub)."