Leviticus 25:38

36Take thou no usury of him, or increase: but fear thy God; that thy brother may live with thee.

37Thou shalt not give him thy money upon usury, nor lend him thy victuals for increase.

38I am the LORD your God, which brought you forth out of the land of Egypt, to give you the land of Canaan, and to be your God.

39And if thy brother that dwelleth by thee be waxen poor, and be sold unto thee; thou shalt not compel him to serve as a bondservant:

40But as an hired servant, and as a sojourner, he shall be with thee, and shall serve thee unto the year of jubile.