2 Samuel 24:22-25

Araunah said to David, “Let my lord the king take and offer up what is good in his sight. Look, the oxen for the burnt offering, the threshing sledges and the yokes of the oxen for the wood. Everything, O king, Araunah gives to the king.” And Araunah said to the king, “May the LORD your God accept you.” 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.