Abu Dawud
General Behavior
Book Number: 036 / Hadith Number: 4878
Narated By Sa'id ibn al-Musayyab : While the Apostle of Allah (pbuh) was sitting with some of his companions, a man reviled AbuBakr and insulted him. But AbuBakr remained silent. He insulted him twice, but AbuBakr controlled himself. He insulted him thrice and AbuBakr took revenge on him. Then the Apostle of Allah (pbuh) got up when AbuBakr took revenge.
AbuBakr said: Were you angry with me, Apostle of Allah?
The Apostle of Allah (pbuh) replied: An angel came down from Heaven and he was rejecting what he had said to you. When you took revenge, a devil came down. I was not going to sit when the devil came down.