Musannaf Ibn Abi Shayba 21:197

Ubayd Allah ibn Musa narrated to us, from Isra'il, from Abu Ishaq, from Abu Maysarah, who said: The Messenger of Allah, may Allah bless him and grant him peace, used to say when he went to sleep: "I seek refuge in Your noble Face and Your perfect words from the evil of that which You are seizing by its forelock. O Allah, You remove sin and debt. O Allah, Your promise is not broken, Your army is not defeated, and the wealth of the wealthy does not benefit them against You. Glory be to You and with Your praise."