Musannaf Ibn Abi Shayba 3:718

Abu Bakr narrated to us, he said: Abdullah bin Numayr narrated to us, he said: Al-A’mash narrated to us, from ‘Amr bin Murrah, he said: A sheikh narrated to me, from Suhayb bin Zafar, he said: I heard Ibn ‘Umar saying at the end of the prayer: "O Allah, You are Peace, and from You is peace. Blessed are You, O Possessor of Majesty and Honor." Then I prayed next to Abdullah bin ‘Amr and I heard him saying them. He said: So I said to him, "I heard Ibn ‘Umar saying the same as what you are saying." Abdullah bin ‘Amr said: "Indeed, the Messenger of Allah (ﷺ) used to say them."