While we were with the Messenger of Allah ﷺ as he was distributing some allotment, Dhu al-Khuwaysirah, a man from Banu Tamim, came to him and said, “O Messenger of Allah, be just!” He said: “Woe to you! Who would be just if I were not just? You would have failed and lost if I were not just.” Umar said, “O Messenger of Allah, permit me concerning him so that I may strike his neck.”
He said: “Leave him, for he has ˹such˺ companions that one of you will consider his prayer insignificant compared to their prayer, and his fasting insignificant compared to their fasting. They recite the Quran but it does not go beyond their throats. They will pass out of the religion as an arrow passes through the game: one looks at its arrowhead and finds nothing on it, then looks at its shaft and finds nothing on it, then looks at its nadiyy —its wooden part— and finds nothing on it, then looks at its feathers and finds nothing on it; it has outstripped the dung and blood. Their sign is a black man, one of whose upper arms is like a woman’s breast, or like a piece of flesh hanging down and quivering. They will emerge at a time of division among the people.”
Abu Saʿid said: I bear witness that I heard this hadith from the Messenger of Allah ﷺ, and I bear witness that Ali b. Abu Talib fought them and I was with him. He ordered that man to be sought, and he was brought until I looked at him matching the description the Prophet ﷺ had given of him.