Musnad Ahmad 32:1007

Ubaydah ibn Humayd narrated to us, from Humayd al-Tawil, from Anas ibn Malik, who said: The Prophet of Allah, peace and blessings of Allah be upon him, went out, and the Ansar met him among them. 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 show kindness to those among them who do good, and overlook the faults of those among them who do wrong."