Leviticus 25:37
You must not lend him your silver at interest or sell him your food for profit.
What it says
Money must not be lent at interest, and food must not be sold to him for profit.
What it is doing
This verse names the specific forms of prohibited exploitation.
In context
35Now if your countryman becomes destitute and cannot support himself among you, then you are to help him as you would a foreigner or stranger, so that he can continue to live among you. 36Do not take any interest or profit from him, but fear your God, that your countryman may live among you. 37You must not lend him your silver at interest or sell him your food for profit. 38I am the LORD your God, who brought you out of the land of Egypt to give you the land of Canaan and to be your God.