It is narrated from Abu Kathir, the slave of the Ansar, who says: I was with my master, Sayyiduna Ali ibn Abi Talib (may Allah be pleased with him), when he killed the people of Nahrawan. It seemed that after killing them, the people felt regret and sorrow. Sayyiduna Ali (may Allah be pleased with him), perceiving this situation, said: O people! The Messenger of Allah (peace and blessings be upon him) informed us about such people who would leave the religion just as an arrow passes through its prey; they will never return to the religion until the arrow returns to the bow. One of their signs is that among them there will be a man who is black-skinned and has a defective hand; that hand will be like a woman’s breast, and on it there will be a nipple-like protrusion as is on a breast, and around it there will be seven hairs. You should search for him; I think he is among them. The people searched for him and found him under a pile of the slain by the riverbank. When they brought him out, Sayyiduna Ali (may Allah be pleased with him) loudly proclaimed“Allahu Akbar”and said: The word of Allah and His Messenger is true. At that time, Sayyiduna Ali (may Allah be pleased with him) was carrying his Arab bow; he would place it on the flesh of the slain man’s defective hand and kept saying: The word of Allah and His Messenger is true. When the people saw this, they also began to say“Allahu Akbar”and expressed happiness, and their state of sorrow disappeared.