Leviticus 25:15-17 World English Bible (WEB)
15 According to the number of years after the Jubilee you shall buy from your neighbor. According to the number of years of the crops he shall sell to you. 16 According to the length of the years you shall increase its price, and according to the shortness of the years you shall diminish its price; for he is selling the number of the crops to you. 17 You shall not wrong one another, but you shall fear your God; for I am Yahweh your God.