Musnad Ahmad 1153:2352

Ziyad ibn Abdullah ibn al-Tufayl al-Bakkai narrated to us, he said: Mansur narrated to us, from Hilal ibn Yasaf, from Farwah ibn Nawfal, he said: I said, "O Mother of the Believers, tell me something that the Messenger of Allah, may Allah bless him and grant him peace, used to supplicate with." She said: The Messenger of Allah, may Allah bless him and grant him peace, used to frequently supplicate: "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."