General Behavior (Kitab Al-Adab)
Dawud :: Book 41 : Hadith 5036
Narrated AbulAzhar al-Anmari:
When the Apostle of Allah (peace_be_upon_him) went to his bed at night, he would say: in the name of Allah, I have laid down my side for Allah. O Allah! forgive me my sin, drive away my devil, free me from my responsibility, and place me in the highest assembly.