It is narrated from Abu Usayd al-Ansari (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "The best of the houses of the Ansar are Banu al-Najjar, then Banu Abd al-Ashhal, then Banu al-Harith, and Banu Sa'idah, and in all the houses of the Ansar there is good." It was said: He (peace and blessings be upon him) has preferred (others) over us. Then it was said: He (peace and blessings be upon him) has preferred you over many.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 13109