2 Samuel 12:31

And he brought forth the people that were therein, and put them under saws, and under harrows of iron, and under axes of iron, and made them pass through the brickkiln: and thus did he unto all the cities of the children of Ammon. So David and all the people returned unto Jerusalem.

He also brought out the people who were in it, and put some to work at saws, iron picks, and iron axes, and made others serve at the brick works. And he did the same to all the cities of the sons of Ammon. Then David and all the people returned to Jerusalem.