2 Samuel 3:6-8

6During the war between the house of Saul and the house of David, Abner had been strengthening his own position in the house of Saul. 7Now Saul had had a concubine named Rizpah daughter of Aiah. And Ish-Bosheth said to Abner, “Why did you sleep with my father’s concubine?” 8Abner was very angry because of what Ish-Bosheth said. So he answered, “Am I a dog’s head—on Judah’s side? This very day I am loyal to the house of your father Saul and to his family and friends. I haven’t handed you over to David. Yet now you accuse me of an offense involving this woman!