Authentic Supplication Number 17.
When he would enter upon morning he would say that also: “Asbahna wa Asbahal mulku lil-lahi…(33)
(32) We have entered upon night, the Kingdom has passed unto Allah this night, and All praise be to Allah. There is no ‘ilah except Allah alone, no partner does He have. His is The Kingdom and to Him is All Praise, and He is well able to do everything, My Lord I ask you the good of what is in this night and the good of what follows it, and solicit Thy protection against the evil of this night and the evil of what follows it. O Allah! I seek Thy protection against laziness and the wretchedness of old-age. I seek Thy protection against the torment in Hell and the torment in the grave.
(33) We have entered upon morning, and the Kingdom has passed unto Allah this morning … Note: The Kingdom passes unto Allah Night after Morning, and Morning after Night, day after day after day. Meaning that it is always Allah’s.
Reported by Muslim. Al-Albani included this hadeeth in The Authentic of Good Sayings as #17.