Volume 9 · Book 93 · Hadith 491
Narrated Juhaifa: When the Prophet went to bed, he used to say, "Allhumma bismika ahya wa amut." And when he got Up in the mornings he used to say, "Alhamdu lillahi al-ladhi ahyana ba'da ma amatana wa ilaihi-n-nushur."
— Sahih Bukhari, Volume 9, Book 93: Oneness, Uniqueness of Allah (Tawheed), Hadith #491