Riyad as-Salihin
Messenger of Allah (ﷺ) directed me thus: "Whenever you go to bed, perform Wudu' as you do for Salat then (before sleeping) recite: 'O Allah! I have submitted myself to You, I have turned myself to You, committed my affairs...
The Book of the Etiquette of Sleeping, Lying and Sitting etc
Part of: Manners, Etiquette & Character
31 hadith in this topic