(13) باب السُّؤَالِ بِأَسْمَاءِ اللَّهِ تَعَالَى، وَالاِسْتِعَاذَةِ بِهَا
Narrated Hudhaifah:
When the Prophet (ﷺ) went to bed, he used to say, "Allahumma bismika ahya wa amut." And when he woke up in the mornings he used to say, "Al-hamdu li l-lahi al-ladhi ahyana ba'da ma amatana wa ilaihi-nnushur."
Reference: Sahih al-Bukhari 7394
In-book reference: Book 97, Hadith 23
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 93, Hadith 491