From Sahih Bukhari (Hadith 7395):
Narrated Abu Dharr:When the Prophet (ﷺ) went to bed at night, he used to say: "Bismika namutu wa nahya." And when he got up in the morning, he used to say, "Al hamdu li l-lahi al-ladhi ahyana ba'da ma amatana, wa ilaihi-nnushur
Reference: Bukhari 7395