Secure the Dua of the Angels

Hadhrat Abdullah ibn ‘Abbaas (radhiyallahu anhu) reports that Rasulullah (sallallahu alaihi wasallam) said, “Keep these bodies (of yours) clean and Allah I will purify you. For indeed no person sleeps in the condition of purity (wudhu) but an angel spends the night under the same sheet with him. If at any part of the night he turns (changes his posture), the angel makes dua for him in the  following words: O Allah! Forgive your servant for he went to sleep in the  condition of purity”.