Leviticus 25:19 (KJV)

And if thou sell ought unto thy neighbour, or buyest ought of thy neighbour's hand, ye shall not oppress one another:

According to the number of years after the jubile thou shalt buy of thy neighbour, and according unto the number of years of the fruits he shall sell unto thee:

According to the multitude of years thou shalt increase the price thereof, and according to the fewness of years thou shalt diminish the price of it: for according to the number of the years of the fruits doth he sell unto thee.

Ye shall not therefore oppress one another; but thou shalt fear thy God:for I am the LORD your God.

Wherefore ye shall do my statutes, and keep my judgments, and do them; and ye shall dwell in the land in safety.

And if ye shall say, What shall we eat the seventh year? behold, we shall not sow, nor gather in our increase:

Then I will command my blessing upon you in the sixth year, and it shall bring forth fruit for three years.

And ye shall sow the eighth year, and eat yet of old fruit until the ninth year; until her fruits come in ye shall eat of the old store.

The land shall not be sold for ever: for the land is mine, for ye are strangers and sojourners with me.

And in all the land of your possession ye shall grant a redemption for the land.