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-Fada'il Al-Sahabah)
Muslim :: Book 31 : Hadith 6115
This hadith has been narrated through other chains of transmitters but all of them narrated on the authority of Jabir that Allah's Apostle (may peace be upon him) said: To the tribe of Aslam Allah has granted safety and to the tribe of Ghifar Allah has granted pardon.