O Allah,, grant forgiveness to the Ansar, the offspring of the Ansar and the offspring of the offspring of the Ansar. This hadith has been narrated on the authority of Shulba with the same chain of transmitters.
Sahih Muslim Book 44, Hadith 244
← Previous Hadith Jabir b. Abdullah reported that it was concerning them (the Ansar) that this verse was revealed, that when the two groups amongst you were about to lose heart and Allah was the Guardian of them both. This concerned Banu Salama and Banu Haritha and we did not like that Allah, the Exalted and Glorious, should not have revealed this verse for the fact that Allah (gave an assurance) of being the Guardian of both.

Sahih Muslim Book 44, Hadith 243 Next Hadith → I think (he also sought forgiveness) for the children of the Ansar and the slaves and the freed men of the Ansar. I have no doubt about it.

Sahih Muslim Book 44, Hadith 245