Musnad Ahmad 32:376

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from 'Abdullah ibn 'Abdullah ibn Jabr, who said: I heard Anas say: The Messenger of Allah, may Allah bless him and grant him peace, said: "The sign of faith is the love of the Ansar, and the sign of hypocrisy is hatred of them."