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: 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.