Deuteronomy 24:20-21

ISV^{(i) 20} When you harvest the olives from your trees, don’t go back to the branches a second time. What remains is for the foreigner, the orphan, or the widow. ²¹ When you harvest the grapes in your vineyard, don’t go back a second time. What remains are for the foreigner, the orphan, or the widow.