بِاسْمِكَ اللَّهُمَّ أَمُوتُ وَأَحْيَا
Bismika Allahumma amutu wa ahya.
English meaning
In Your name, O Allah, I die and I live.
English meaning: editorial rendering
Sahih al-Bukhari 6324 ↗
Sahih · recorded in Sahih al-Bukhari
This is one reported bedtime supplication; it is not the full collection of bedtime adhkar.
Context & reflection
Hudhayfah reported that the Prophet ﷺ said this when going to bed.