2 Samuel 8:2; 2 Samuel 8:7-8

2 David also defeated the Moabites. He made them lie down on the ground and measured them off with a length of cord. Every two lengths of them were put to death, and the third length was allowed to live. So the Moabites became subject to David and brought him tribute.
7 David took the gold shields that belonged to the officers of Hadadezer and brought them to Jerusalem. 8 From Tebah and Berothai, towns that belonged to Hadadezer, King David took a great quantity of bronze.