Chapter on the Rulings of Congregational Prayer (the Minimum Number for Congregational Prayer, the Description of the Imam, Who Is to Be Followed and Who Is Not to Be Followed, Recitation Behind Both of Them, the Rulings of Those Led in Prayer, and Other Such Rulings Related to It)

Al-Husayn ibn Said narrated from al-Nadr, from Hisham, from Sulayman ibn Khalid, who said: I asked Aba Abdillah عليه السلام, peace be upon him, about a man who is leading the people in prayer, then becomes invalidated (enters a state of hadath), and he appoints a man who had missed a rak’ah what should he do? Imam عليه السلام said: “He should not appoint a man who had missed a rak’ah, but rather he should take the hand of someone else and appoint him.”