Thauban reported:
When the Messenger of Allah (ﷺ) finished his prayer. he begged forgiveness three times and said: O Allah! Thou art Peace, and peace comes from Thee; Blessed art Thou, O Possessor of Glory and Honour. Walid reported: I said to Auza'i: How Is the seeking of forgiveness? He replied: You should say:, I beg forgiveness from Allah, 1 beg forgiveness from Allah."