Sahih Muslim 2710
Sahih Muslim · Book 48: The Book Pertaining to the Remembrance of Allah, Supplication, Repentance and Seeking Forgiveness · Supplication When Going To Sleep
This hadith has been transmitted on the authority of al-Bara' b. 'Azib that Allah's Messenger (ﷺ) commanded a person (in these words) and there is no mention of this:
حَدَّثَنَا ابْنُ الْمُثَنَّى ، وَابْنُ، بَشَّارٍ قَالاَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ ، حَدَّثَنَا شُعْبَةُ ، عَنْ أَبِي، إِسْحَاقَ أَنَّهُ سَمِعَ الْبَرَاءَ بْنَ عَازِبٍ ، يَقُولُ أَمَرَ رَسُولُ اللَّهِ صلى الله عليه وسلم رَجُلاً . بِمِثْلِهِ وَلَمْ يَذْكُرْ " وَإِنْ أَصْبَحْتَ أَصَبْتَ خَيْرًا " .
" if you get up in the morning you would get up with a bliss."