2 Samuel 4:11-12

11How much more should I reward evil men who have killed an innocent man in his own house and on his own bed? Shouldn’t I hold you responsible for his blood and rid the earth of you?”

12So David ordered his young men to kill them, and they did. They cut off their hands and feet and hung their bodies beside the pool in Hebron. Then they took Ishbosheth’s head and buried it in Abner’s tomb in Hebron.