1 Chronicles 20:2-3

21David took the crown of 2their king from his head, and he found it to weigh a talent of gold, and there was a precious stone in it; and it was placed on David’s head. And he brought out the spoil of the city, a very great amount. 3He brought out the people who were in it, 3and cut them with saws and with sharp instruments and with axes. And thus David did to all the cities of the sons of Ammon. Then David and all the people returned to Jerusalem.