2 Samuel 12:30-31
30 He took the crown from the head of their king—its weight was a talent of gold, and it was set with precious stones—and it was placed on David’s head. He took a great quantity of plunder from the city
31 and brought out the people who were there, consigning them to labor with saws and with iron picks and axes, and he made them work at brickmaking. He did this to all the Ammonite towns. Then David and his entire army returned to Jerusalem.