Musannaf Ibn Abi Shayba 38:120

Yahya ibn Adam narrated to us, he said: Warqa’ narrated to us, from ‘Amr ibn Dinar, from Ziyad, the freed slave of ‘Amr ibn al-‘As, from ‘Amr ibn al-‘As, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The rebellious group will kill ‘Ammar."