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: 6128
Abu Bakra reported from the Messenger of Allah (may peace be upon him) that Aslam, Ghifar, Muzaina and Juhaina are better than Banu Tamim, Banu Amir and their allies Banu Asad and Ghatfan.