Hadith #785
Chapter: The Book of the Remembrance of Allah
كتاب الأذكار
Arabic Text
وعن حذيفة رضي الله عنه أن رسول الله صلى الله عليه وسلم
كان إذا أراد أن يرقد وضع يده اليمنى تحت خده، ثم يقول: "اللهم قني عذابك يوم تبعث عبادك". ((رواه الترمذي وقال حديث حسن ورواه أبو داود من رواية حفصة رضي الله عنه وفيه أنه كان يقوله ثلاث مرات)).
Isnad Chain
حذيفة
English Translation
Hudhaifah (may Allah be pleased with him) reported that whenever the Messenger of Allah ﷺ intended to go to sleep, he would place his right hand under his (right) cheek and supplicate: "Allahumma qini 'adhabaka yauma tab'athu 'ibadaka (O Allah! Guard me against Your punishment on the Day when You will resurrect Your slaves).".In a narration in Abu Dawud, Hafsah (may Allah be pleased with her) said: Before going to sleep the Messenger of Allah ﷺ would recite this Du'a three times.
Quran References
Reference: Riyadh al-Salihin, Book 15, Hadith 785
Sunnah.com ref: riyadh-salihin 785
Islam.wiki ID: IWH-67623