I Samuel 30:16-18

And when he had brought him down, there they were, spread out over all the land, eating and drinking and dancing, because of all the great spoil which they had taken from the land of the Philistines and from the land of Judah. Then David attacked them from twilight until the evening of the next day. Not a man of them escaped, except four hundred young men who rode on camels and fled. So David recovered all that the Amalekites had carried away, and David rescued his two wives.