Hadith 1550
Farwah bin Nawfal Al-Ashjai asked Aishah the Mother of the Believers, about the supplication of the Messenger of Allah ﷺ. She replied: "He would say: 'O Allah, I seek refuge in You from the evil of what I have done, and from the evil of what I have not done. '"
Hadith 5055
Farwah bin Nawfal quoted his father as saying that the Prophet ﷺ said to Nawfal (his father): Say, O infidels! and then sleep at its end, for it is a declaration of freedom from polytheism.