Allah's Messenger (ﷺ) said to me, "When you want to go to bed, perform ablution as you do for prayer, thenlie down on your right side and say: 'Allahumma aslamtu wajhi ilaika, wa fawwadtu 'amri ilaika waalja'tu dhahri ilaika, raghbatan wa rahbatan ilaika, la malja'a wa la manja minka illa ilaika. Amantubikitabik al-ladhi anzalta wa binabiyyika al-ladhi arsalta'. If you should die then (after reciting this) youwill die on the religion of Islam (i.e., as a Muslim); so let these words be the last you say (beforegoing to bed)" While I was memorizing it, I said, "Wa birasulika al-ladhi arsalta (in Your Apostlewhom You have sent).' The Prophet (ﷺ) said, "No, but say: Wa binabiyyika al-ladhi arsalta (in YourProphet whom You have sent).