The Prophet ﷺ said, "The best of the Ansar's families (homes) are those of Banu An-Najjar and then (those of) Banu ʿAbdul Ash-hal, then (those of) Banu Al-Harith bin Al-Khazraj and then (those of) Banu Saʿida; nevertheless, there is good in all the families (houses) of the Ansar." On this, Saʿd (bin Ubada) said, "I see that the Prophet ﷺ has preferred some people to us." Somebody said (to him), "No, but he has given you superiority to many." (Hadith similar to above with a different chain)
قَالَ النَّبِيُّ ﷺ خَيْرُ دُورِ الأَنْصَارِ بَنُو النَّجَّارِ ثُمَّ بَنُو عَبْدِ الأَشْهَلِ ثُمَّ بَنُو الْحَارِثِ بْنِ خَزْرَجٍ ثُمَّ بَنُو سَاعِدَةَ وَفِي كُلِّ دُورِ الأَنْصَارِ خَيْرٌ فَقَالَ سَعْدٌ مَا أَرَى النَّبِيَّ ﷺ إِلاَّ قَدْ فَضَّلَ عَلَيْنَا فَقِيلَ قَدْ فَضَّلَكُمْ عَلَى كَثِيرٍ وَقَالَ عَبْدُ الصَّمَدِ حَدَّثَنَا شُعْبَةُ حَدَّثَنَا قَتَادَةُ سَمِعْتُ أَنَسًا قَالَ أَبُو أُسَيْدٍ عَنِ النَّبِيِّ ﷺ بِهَذَا وَقَالَ سَعْدُ بْنُ عُبَادَةَ