Ja'far says: I was sitting with Abdullah bin Umar and Abu Sa'id Khudri (may Allah be pleased with them) when one of them said to the other: I heard the Messenger of Allah (peace be upon him) saying: "On the Day of Resurrection, the children of Adam will sweat." One of them said: up to the earlobes, and the other said: it will reach up to the mouth like a bridle.