Deuteronomy 24:1-25:4
14 You are not to exploit the hired servant who is poor and destitute, whether he is one of your brothers or a stranger who lives in your towns.
15 You must pay him his wage each day, not allowing the sun to set before you do, for he is poor and is anxious for it; otherwise he may appeal to the Lord against you, and it would be a sin for you.
19 When reaping the harvest in your field, if you have overlooked a sheaf in that field, do not go back for it. Leave it for the stranger, the orphan and the widow, so that the Lord your God may bless you in all your undertakings.
20 When you beat your olive trees you must not go over the branches twice. Let anything left be for the stranger, the orphan and the widow.
21 When you harvest your vineyard you must not pick it over a second time. Let anything left be for the stranger, the orphan and the widow.
22 Remember that you were a slave in the land of Egypt. That is why I lay this charge on you.