جامع الترمذي

Narrated Anas bin Malik: that the Messenger of Allah (ﷺ) said: "Shall I inform you of the best houses of the Ansar, or of the best of the Ansar?" They said: "Of course, O Messenger of Allah!" He said: "Banu An-Najjar. Then those who come after them are Banu 'Abdul-Ashhal. Then those who come after them are Banu Al-Harith bin Al-Khazraj. Then those who come after them are Banu Sa'idah." Then he motioned with his hands, clenching his fingers, then opening them, like an archer does with his hands. He said: "And in all of the houses of the Ansar there is good."