He told that they used to call Zaid b. Haritha, God's messenger's client, simply Zaid b. Muhammad till the verse in the Quran came down, "Call them after their fathers[*]."
*Quran, 33:5.
(Bukhari and Muslim.)
The tradition of al-Bara' in which he said to `Ali, "You pertain to me," has been mentioned in the chapter on young people attaining puberty, and their guardianship in childhood[*].