The Messenger of Allah ﷺ said, "Shall I tell you about the best of the houses of the Ansar? The house of Banu Najjar, then the house of Banu Abd al-Ashhal, then the house of Banu Harith bin Khazraj, then the house of Banu Saidah. And in every house of the Ansar there is good."
حدثنا ابن أبي عدي عن حميد
أن رسول الله ﷺ قال ألا أخبركم بخير دور الأنصار دار بني النجار ثم دار بني عبد الأشهل ثم دار بني الحارث بن الخزرج ثم دار بني ساعدة وفي كل دور الأنصار خير
Its isnad is sahih. Bukhari narrated it, 7/115, no. 3789, Fath, in the merits of the companions of the Prophet ﷺ, the merits of the houses of the Ansar, and Muslim, 4/1949, no. 2511, and Tirmidhi, 5/16, no. 3910, who said, hasan sahih.