Deuteronomy 24:17-19

17You are not to twist justice for an outsider or orphan, and you are not to take as collateral a widow’s clothing.

18But you are to remember that you were a slave in Egypt, and Adonai your God redeemed you from there. Therefore I am commanding you to do this thing.

19“When you reap your harvest in your field and have forgotten a sheaf in the field, you are not to turn back to get it. It is for the outsider, for the orphan and for the widow—in order that Adonai your God may bless you in all the work of your hands.