Sayyiduna Rabi’ah bin Ka’b Aslami (may Allah be pleased with him) says: I used to spend the night at the door of the Messenger of Allah (peace and blessings be upon him) so that I could provide him with water for ablution. In one narration it is stated: I used to sleep in the chamber of the Noble Prophet (peace and blessings be upon him). After a portion of the night had passed, I would hear him say:“Sami’ Allahu liman hamidah,”and after another portion of the night had passed, I would hear him say:“Alhamdu lillahi Rabbil ‘alamin.”And in one narration it is stated: I would hear him say during a part of the night:“Subhanallahi al-‘Azim wa bihamdih.”