1 Chronicles 21:20-25
21:20 While Ornan was threshing wheat, he turned and saw the messenger, and he and his four sons hid themselves.
21:21 When David came to Ornan, Ornan looked and saw David; he came out from the threshing floor and bowed to David with his face to the ground.
21:22 David said to Ornan, “Sell me the threshing floor so I can build on it an altar for the Lord – I’ll pay top price – so that the plague may be removed from the people.”
21:23 Ornan told David, “You can have it! My master, the king, may do what he wants. Look, I am giving you the oxen for burnt sacrifices, the threshing sledges for wood, and the wheat for an offering. I give it all to you.”
21:24 King David replied to Ornan, “No, I insist on buying it for top price. I will not offer to the Lord what belongs to you or offer a burnt sacrifice that cost me nothing.
21:25 So David bought the place from Ornan for 600 pieces of gold.