2 Samuel 4:9-12

David answered Rekab and his brother Baanah, the sons of Rimmon the Beerothite, “As the LORD, who has delivered my life from every distress, lives, when one reported to me that Saul was dead, although he was a bearer of good news in his own eyes, I seized him and killed him at Ziklag, which was my reward for his message. How much more so, when guilty men have slain an innocent man in his own house on his own bed, should I not now require his blood from your hand and wipe you from the earth?” David then gave orders to the young men. They killed them, cut off their hands and feet, and hung them at the pool in Hebron, but they took the head of Ish-Bosheth and buried it in the grave of Abner at Hebron.