Leviticus 25:20-26

²⁰And if you say, Where will our food come from in the seventh year, when we may not put in seed, or get in the increase

²¹Then I will send my blessing on you in the sixth year, and the land will give fruit enough for three years.

²²And in the eighth year you will put in your seed, and get your food from the old stores, till the fruit of the ninth year is ready.

²³No exchange of land may be for ever, for the land is mine, and you are as my guests, living with me for a time.

²⁴Wherever there is property in land, the owner is to have the right of getting it back.

²⁵If your brother becomes poor, and has to give up some of his land for money, his nearest relation may come and get back that which his brother has given up.

²⁶And if he has no one to get it back for him, and later he himself gets wealth and has enough money to get it back;