Musnad Abi Ya'la 476 — he said: I was present with Sayyiduna Ali

It is narrated from a man of the tribe of Abd al-Qays that he said: I was present with Sayyiduna Ali (may Allah be pleased with him) on the day the people of al-Nahrawan (the Khawarij) were killed. Then he related that when they had been killed, Sayyiduna Ali (may Allah be pleased with him) said: "Bring me Dhu al-Thudayyah (the man with the breast-like hand)" or "al-Mukhdaj (the man with the deficient limb)". The narrator mentioned some further things about this that I do not remember. He related: Then the people searched for him and found an Abyssinian man who was like a camel (in size), and on his shoulder there was a protrusion like a woman's breast. Abd al-Rahman (may Allah have mercy on him) said: I think the narrator also mentioned that there was hair on it. If anyone's soul could leave him out of sheer joy, the soul of Sayyiduna Ali (may Allah be pleased with him) would have left him that day (from the intensity of his happiness). He (may Allah be pleased with him) said: "Allah and His Messenger (peace and blessings be upon him) have spoken the truth. Whoever among the people tells me that he saw him before this place where he fell (was killed), then I am a liar."