(43) باب مِنْ فَضَائِلِ الأَنْصَارِ رضى الله تعالى عنهم
Anas reported that Allah's Messenger (ﷺ) sought forgiveness for the Ansar and he said:
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.
Reference: Sahih Muslim 2507
In-book reference: Book 44, Hadith 245
USC-MSA web (English) reference(deprecated numbering scheme): Book 31, Hadith 6100