2 Samuel 3:7-8

7Now Saul had a concubine whose name was Rizpah the daughter of Aiah; and Ish-bosheth said to Abner, “Why have you gone in to my father’s concubine?”

8Then Abner was very angry at the words of Ish-bosheth, and he said, “Am I a dog’s head [a despicable traitor] that belongs to Judah? Today I show loyalty and kindness to the house of Saul your father, to his brothers and his friends, by not having you handed over to David; and yet you charge me today with guilt concerning this woman.