1 Samuel 30:16-18

So the Egyptian led David to the Amalekites. They were lying around on the ground, eating and drinking and celebrating with the things they had taken from the land of the Philistines and from Judah. David fought them from sunset until the evening of the next day. None of them escaped, except four hundred young men who rode off on their camels. David got his two wives back and everything the Amalekites had taken.