Narrated Ibn `Abbas:
Regarding the Verse: 'And (We) made you into Shu'ub and Qabail-- (49.13) that Shu'uib means the big Qabail (i.e. nations) while the Qabail (i.e. tribes) means the branch tribes.
Narrated Jabir bin `Abdullah:
`Umar used to say, "Abu Bakr is our chief, and he manumitted our chief," meaning Bilal.
Narrated Abu Bakra:
Al-Aqra' bin Habis said to the Prophet (ﷺ) "Nobody gave you the pledge of allegiance but the robbers of the pilgrims (i.e. those who used to rob the pilgrims) from the tribes of Aslam, Ghifar, Muzaina." (Ibn Abi Ya'qub is in doubt whether Al-Aqra' added. 'And Juhaina.') The Prophet (ﷺ) said, "Don't you think that the tribes of Aslam, Ghifar, Muzaina (and also perhaps) Juhaina are better than the tribes of Bani Tamim, Bani Amir, Asad, and Ghatafan?" Somebody said, "They were unsuccessful and losers!" The Prophet said, "Yes, by Him in Whose Hands my life is, they (i.e. the former) are better than they (i.e. the latter).
'A'idh b. Amr reported that Abu Sufyan came to Salman, Suhaib and Bilal in the presence of a group of persons. They said: By Allah, the sword of Allah did not reach the neck of the enemy of Allah as it was required to reach. Thereupon Abu Bakr said: Do you say this to the old man of the Quraish and their chief? Then he came to Allah's Messenger (may peace be upon'him) and informed him of this. Thereupon he (the Holy Prophet) said: Abu Bakr, you have perhaps annoyed them and if you annoyed them you have in fact annoyed your Lord. So Abu Bakr came to them and said: O my brothers, I have annoyed you. They said: No, our brother, may Allah forgive you