2 Samuel 24:24-25

However, the king said to Araunah, “No, but I will surely buy it from you for a price, for I will not offer burnt offerings to the LORD my God which cost me nothing.” So David bought the threshing floor and the oxen for fifty shekels of silver. David built there an altar to the LORD and offered burnt offerings and peace offerings. Thus the LORD was moved by prayer for the land, and the plague was held back from Israel.