Musannaf Ibn Abi Shaybah 39873 — Reports on the caliphate and killing

It is narrated from Abu Qilabah that when Sayyiduna Uthman (may Allah be pleased with him) was killed, the speakers of Iliya stood up. Then the last of (their) speakers stood up, one of the Companions of the Messenger of Allah (peace and blessings be upon him), who was called Sayyiduna Murrah bin Ka'b (may Allah be pleased with him). He said: "Were it not for a hadith I heard from the Messenger of Allah (peace and blessings be upon him), I would not have stood up. The Messenger of Allah (peace and blessings be upon him) mentioned a tribulation (I think the narrator said: he (peace and blessings be upon him) described it as being near at hand), and meanwhile a man passed by covered with his cloak. The Messenger of Allah (peace and blessings be upon him) said: 'On that day (of the tribulation), this man and his companions will be upon the truth.'" (The narrator said:) "So I set off and turned that person's face towards him (peace and blessings be upon him) and said: 'This man?' He (peace and blessings be upon him) said: 'Yes.'" And this man was Sayyiduna Uthman.