Sahih Muslim
The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fadail Al-Sahabah)
Book Number: 031 / Hadith Number: 6155
This hadith has been reported on the authority of Abu Huraira through another chain of transmitters (but with this variation) that Abu Huraira said: I do not know whether he (the Holy Prophet) said (these words:" Then next" ) twice or thrice.