Abu Bakr bin Muhammad bin Amr bin Hazm narrates from his father that when Sayyiduna Ammar bin Yasir (may Allah be pleased with him) was martyred, Amr bin Hazm went to Amr bin al-As and said: Ammar has been killed, and I heard the Messenger of Allah (peace and blessings be upon him) say: "A rebellious group will kill him." On hearing this, Amr bin al-As got up in alarm and went until he reached Sayyiduna Mu'awiyah (may Allah be pleased with him). Mu'awiyah asked: What is the matter with you? He said: Ammar bin Yasir has been killed. Mu'awiyah said: Ammar has been killed, so what? Amr said: I heard the Messenger of Allah (peace and blessings be upon him) say: "A rebellious group will kill him." At this Mu'awiyah said to him: Did we kill him? Rather, Ali and his companions killed him, who brought him (onto the battlefield) until they threw him among our spears (or he said: our swords). This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it with this wording.