Hadith 5049
Chapter 107: What to say when going to sleep - كتاب الأدب
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ سُفْيَانَ، عَنْ عَبْدِ الْمَلِكِ بْنِ عُمَيْرٍ، عَنْ رِبْعِيٍّ، عَنْ حُذَيْفَةَ، قَالَ كَانَ النَّبِيُّ صلى الله عليه وسلم إِذَا نَامَ قَالَ " اللَّهُمَّ بِاسْمِكَ أَحْيَا وَأَمُوتُ " . وَإِذَا اسْتَيْقَظَ قَالَ " الْحَمْدُ لِلَّهِ الَّذِي أَحْيَانَا بَعْدَ مَا أَمَاتَنَا وَإِلَيْهِ النُّشُورُ " .
Hudhaifah said :
when the prophet (May peace be upon him) lay down on his bed (at night), he would say: O Allah! In Thy name I die and live. When he awoke, he said: praise be to Allah who has given us life after causing us to die and to whom we shall be resurrected.
Reference : Sunan Abi Dawud 5049
In-book reference : Book 43, Hadith 277