The Verse:--"When two parties from among you were about to lose heart, but Allah was their Protector," (3.122) was revealed concerning us, and we were the two parties, i.e. Banu Haritha and Banu Salama, and we do not wish (that it had not been revealed) or I would not have been pleased (if it had not been revealed), for Allah says:--"...Allah was their Protector."
Sahih al-Bukhari Book 65, Hadith 80
← Previous Hadith The Verse:--"You (true Muslims) are the best of peoples ever raised up for mankind." means, the best of peoples for the people, as you bring them with chains on their necks till they embrace Islam.

Sahih al-Bukhari Book 65, Hadith 79 Next Hadith → That he heard Allah's Messenger (ﷺ) on raising his head from the bowing in the last rak`a in the Fajr prayer, saying, "O Allah, curse such-and-such person and such-and-such person, and such-and-such person," after saying, "Allah hears him who sends his praises to Him, O our Lord, all praise is for you." So Allah revealed:--"Not for you (O Muhammad) (but for Allah) is the decision, verily they are indeed wrongdoers." (3.128)

Sahih al-Bukhari Book 65, Hadith 81