Chapter on the Rulings on Forgetfulness (Ahkam al-Sahw)

Al-Husayn ibn Sa‘id from Ibn Abi Umayr from Jamil, who said: I asked Abu Abdillah عليه السلام, peace be upon him, about a man who had prayed two rak‘ahs and then stood up. Imam عليه السلام said: "He must start over." I asked: “What about what people narrate, then I mentioned to him the narration of Dhu al-Shimalayn.” Imam عليه السلام said: "The Messenger of Allah سبحانه وتعالى, peace be upon him and his family, did not leave His صلى الله عليه وعلى آله وسلم place, and had He صلى الله عليه وعلى آله وسلم left it, He صلى الله عليه وعلى آله وسلم would have had to start over."