Musannaf Ibn Abi Shaybah 40482 — Reports on Uthman (may Allah be)

It is narrated from Qays that when Sayyiduna Mu'awiyah and Sayyiduna Amr (may Allah be pleased with them both) came to Kufah, al-Harith bin al-Azma' came to Sayyiduna Amr. Sayyiduna Amr was coming out riding. Al-Harith said to him: I came on a matter; had you been seated, I would have put a question to you. Sayyiduna Amr said: Ask whatever you have to ask, for whatever question I could answer while seated, I can answer now too. Al-Harith said: Tell me something about Sayyiduna Ali (may Allah be pleased with him) and Sayyiduna Uthman (may Allah be pleased with him). He said: Anger and selfishness came together, and anger overcame selfishness. Then he rode on.