2 Samuel 12:30-31

30David took the crown from their king’s head, and it was placed on his own head. It weighed a talent of gold, and it was set with precious stones. David took a great quantity of plunder from the city 31and 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.David did this to all the Ammonite towns. Then he and his entire army returned to Jerusalem.