2 Samuel 24:22-25

Araunah said to David, “Let my lord the king take whatever he wishes and offer it up. Here are oxen for the burnt offering, and here are threshing sledges and ox yokes for the wood. Your Majesty, Araunah gives all this to the king.” Araunah also said to him, “May the LORD your God accept you.” But the king replied to Araunah, “No, I insist on paying you for it. I will not sacrifice to the LORD my God burnt offerings that cost me nothing.” So David bought the threshing floor and the oxen and paid fifty shekels of silver for them. David built an altar to the LORD there and sacrificed burnt offerings and fellowship offerings. Then the LORD answered his prayer in behalf of the land, and the plague on Israel was stopped.