Musnad Abu Ya'la al-Mawsili 123:2

Abu Bakr ibn Abi Shaybah and Zuhayr ibn Harb narrated to us, they said: Yazid ibn Harun narrated to us, he said: Humayd and Yahya ibn Sa'id informed us, both from Anas ibn Malik, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Shall I not inform you of the best of the houses of the Ansar?" They said: "Yes, O Messenger of Allah." He said: "The houses of Banu al-Najjar, then the houses of Banu 'Abd al-Ashhal, then the houses of Banu al-Harith ibn al-Khazraj, then the houses of Banu Sa'idah." The Messenger of Allah (peace and blessings of Allah be upon him) said: "And in every house of the Ansar there is good." And one of them said in his hadith: "And he raised his voice with it."