Sahih Muslim Book 35, Hadith Number 6548.
Chapter : Supplication at the time of sleeping and going to bed.
This hadith has been transmitted on the authority of al-Bara’ b. ‘Azib that Allah’s Messenger (may peace be upon him) commanded a person (in these words) and there is no mention of this: “if you get up in the morning you would get up with a bliss.”