Deuteronomy 24:20-21

Leeser(i) 20 When thou beatest thy olive-tree, thou shalt not go over the boughs again; for the stranger, for the fatherless, and for the widow shall it be. 21 When thou gatherest the grapes of thy vineyard, thou shalt not glean the small fruit afterward; for the stranger, for the fatherless, and for the widow shall it be.