2 Samuel 12:26-30
26-30Joab, at war in Rabbah against the Ammonites, captured the royal city. He sent messengers to David saying, "I'm fighting at Rabbah, and I've just captured the city's water supply. Hurry and get the rest of the troops together and set up camp here at the city and complete the capture yourself. Otherwise, I'll capture it and get all the credit instead of you." So David marshaled all the troops, went to Rabbah, and fought and captured it. He took the crown from their king's head—very heavy with gold, and with a precious stone in it. It ended up on David's head. And they plundered the city, carrying off a great quantity of loot.
31David emptied the city of its people and put them to slave labor using saws, picks, and axes, and making bricks. He did this to all the Ammonite cities. Then David and the whole army returned to Jerusalem.