Leviticus 25:16-18 Complete Jewish Bible (CJB)
16 If the number of years remaining is large, you will raise the price; if few years remain, you will lower it; because what he is really selling you is the number of crops to be produced. 17 Thus you are not to take advantage of each other, but you are to fear your God; for I am Adonai your God.
18 “‘Rather, you are to keep my regulations and rulings and act accordingly. If you do, you will live securely in the land.