2 Samuel 18:14-15
14-15Joab said, "I can't waste my time with you." He then grabbed three knives and stabbed Absalom in the heart while he was still alive in the tree; by then Absalom was surrounded by ten of Joab's armor bearers; they hacked away at him and killed him.
16-17Joab then blew the ram's horn trumpet, calling off the army in its pursuit of Israel. They took Absalom, dumped him into a huge pit in the forest, and piled an immense mound of rocks over him.
Meanwhile the whole army of Israel was in flight, each man making his own way home.