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 6126
Abu Bakra reported from his father that al-Aqra' b. Habis reported that he came to Allah's Messenger (may peace be upon him) and said to him: How did the tribes of Aslam, Ghifar, Muzaina (and I think he also said Juhaina and the narrator is in doubt about it) owe allegiance to you, whereas they plundered the pilgrims? Thereupon Allah's Messenger (may peace be upon him) said:" you were to say that Aslam, Ghifar, Muzaina and I think Juhaina are better than Banu Tamim, Banu 'Amir and Asad, Ghatfan, then would these people (of latter group of tribes) be in loss? He said: Yes. Thereupon he (the Holy Prophet) said: By Him in Whose Hand is my life, these people are better than Banu Tamim, Banu Amir, Asad and Ghatfan, and in this hadith of Abu Shaiba (these words are not found) that Muhammad (the narrator) had a doubt about.