(17) باب لَنْ يَدْخُلَ أَحَدٌ الْجَنَّةَ بِعَمَلِهِ بَلْ بِرَحْمَةِ اللَّهِ تَعَالَى
This hadith has been narrated on the authority of Musa b. `Uqba with the same chain of transmitters and he did not make a mention of:
"Be happy".
Reference: Sahih Muslim 2818 b
In-book reference: Book 52, Hadith 76
USC-MSA web (English) reference(deprecated numbering scheme): Book 39, Hadith 6771