2 Samuel 18:14-17

14Joab said, ‘I cannot stay here while you talk like this.’ So he took three spears and he went to the tree where Absalom was hanging. While Absalom was still alive, Joab pushed the spears into Absalom's heart.

15Then ten of Joab's own guards came around Absalom. They knocked him down and they killed him.

16Then Joab made a sound with his trumpet to stop the battle. So his soldiers stopped chasing after Israel's soldiers.

17They took Absalom's dead body and they threw it into a deep hole in the forest. They made a big heap of stones over the body. All the Israelite soldiers ran back to their homes.