Muhammad ibn Ahmad ibn Yahya from Bunan ibn Muhammad from his father from Ibn al-Mughirah from al-Sakuni from Imam Ja’far عليه السلام, from his father Imam al-Baqir عليه السلام, peace be upon them, said: Imam al-Baqir عليه السلام said: “A person who performs tayammum should not lead those who have performed wudu, and a person afflicted with paralysis (al-falij) should not lead those who are healthy.”