Musannaf Ibn Abi Shaybah 34311 — The virtues of Ali bin Abi Talib

Layth (may Allah have mercy on him) said: I went in to Abu Ja'far (may Allah have mercy on him), and he mentioned sins and began to weep out of fear. Then he said: Sayyiduna Jabir (may Allah be pleased with him) narrated to me that Sayyiduna Ali (may Allah be pleased with him) lifted the door on the day of Khaybar until the Muslims climbed up to the fortress and conquered it, and that it was tested afterwards, and none could lift that door except forty men.