2 Samuel 24:18-24

18And Gad came that day to David and said to him, “Go up, erect an altar to the Lord on the threshing floor of Araunah the Jebusite.”

19So David, according to the word of Gad, went up as the Lord commanded.

20Now Araunah looked, and saw the king and his servants coming toward him. So Araunah went out and bowed before the king with his face to the ground.

21Then Araunah said, “Why has my lord the king come to his servant?” And David said, “To buy the threshing floor from you, to build an altar to the Lord, that the plague may be withdrawn from the people.”

22Now Araunah said to David, “Let my lord the king take and offer up whatever seems good to him. Look, here are oxen for burnt sacrifice, and threshing implements and the yokes of the oxen for wood.

23All these, O king, Araunah has given to the king.” And Araunah said to the king, “May the Lord your God accept you.”

24Then the king said to Araunah, “No, but I will surely buy it from you for a price; nor will I offer burnt offerings to the Lord my God with that which costs me nothing.” So David bought the threshing floor and the oxen for fifty shekels of silver.