Deuteronomy 24:19-21

¹⁹When you reap your harvest in your field, and have forgot a sheaf in the field, you shall not go again to get it: it shall be for the sojourner, for the fatherless, and for the widow; that Yahweh your God may bless you in all the work of your hands. ²⁰When you beat your olive-tree, you shall not go over the boughs again: it shall be for the sojourner, for the fatherless, and for the widow. ²¹When you gather [the grapes of] your vineyard, you shall not glean it after you: it shall be for the sojourner, for the fatherless, and for the widow.