2 Samuel 24:23-27

Everything, O king, Araunah gives to the king.” And Araunah said to the king, “May the Lord your God be favorable to you.”

However, the king said to Araunah, “No, but I will certainly buy it from you for a price; for I will not offer burnt offerings to the Lord my God that cost me nothing.” So David bought the threshing floor and the oxen for fifty shekels of silver.

Then David built there an altar to the Lord, and he offered burnt offerings and peace offerings. And the Lord responded to prayer for the land, and the plague was withdrawn from Israel.