2 Samuel 12:26-31

26Meanwhile Joab fought against Rabbah of the Ammonites and captured the royal citadel. 27Joab then sent messengers to David, saying, “I have fought against Rabbah and taken its water supply. 28Now muster the rest of the troops and besiege the city and capture it. Otherwise I will take the city, and it will be named after me.” 29So David mustered the entire army and went to Rabbah, and attacked and captured it. 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.