Sahih Muslim
The Book Giving Description of the Day of Judgement, Paradise and Hell (Kitab Sifat Al-Qiyamah wal Janna wan-Nar)
Book Number: 039 / Hadith Number: 6771
This badith 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".