1 Chronicles 21:21-25

As David came to Ornan, Ornan looked and saw David, and went out from the threshing floor and prostrated himself to David with his face to the ground.

Then David said to Ornan, “Give me the site of this threshing floor, so that I may build on it an altar to the Lord; you shall give it to me for the full price, so that the plague may be brought to a halt from the people.”

But Ornan said to David, “Take it for yourself, and may my lord the king do what is good in his sight. See, I am giving the oxen for burnt offerings, and the threshing sledges for wood and the wheat for the grain offering; I am giving it all.”

Nevertheless, King David said to Ornan, “No, but I will certainly buy it for the full price; for I will not take what is yours for the Lord, nor offer a burnt offering which costs me nothing.”

So David gave Ornan six hundred shekels of gold by weight for the site.