658/852 From Sahl ibn Sa'd: The most beloved of names to Ali, may Allah be pleased with him, was Abu Turab, and he used to rejoice when he was called by it. No one named him "Abu Turab" except the Prophet, peace be upon him; he (Ali) had made Fatima angry, so he went out and lay down by the wall in the mosque. The Prophet, peace be upon him, came looking for him and was told: "He is lying by the wall." The Prophet, peace be upon him, came to him and found that his back was covered with dust, so the Prophet, peace be upon him, began to wipe the dust off his back and said: "Sit up, Abu Turab!"