1 Chronicles 20:2-3

2David took the crown from the head of their king—its weight was found to be a talent of gold and it was set with precious stones—and it was placed on David’s head. He took a vast amount of spoils from the city.

3Furthermore, he removed the people who were in it and set them to work with saws, sharp iron tools and axes. Thus he did to all the Ammonite cities. Then David and all the people returned to Jerusalem.