Leviticus 25:14-16

¹⁴And when thou sellest a sale to thy neighbour, or buyest of thy neighbour’s hand, you shall not impose, a man upon his brother.

¹⁵For the number of the years after the (last) jubilee thou shalt buy of thy neighbour; for the number of the years of the produce he shall sell to thee:

¹⁶According to the multitude of the years thou shalt increase the price, and according to the fewness of the years thou shalt diminish the price; for he selleth thee the amount of the fruits.