Musnad Abu Ya'la al-Mawsili 129:81

'Abd al-A'la narrated to us, Mu'tamir narrated to us, he said: I heard Humayd, and he mentioned that he heard Anas say: The Messenger of Allah (may Allah bless him and grant him peace) went out one day while his head was bandaged. The Ansar met him with their faces and their youths. He said: "By the One in Whose hand is the soul of Muhammad, I truly love you. The Ansar have fulfilled what was upon them, and what remains is what is upon you. So do good to those among them who do good, and overlook those among them who do evil."