LXX Deut 24:19

Ἐὰν δὲ ἀμήσῃς ἀμητὸν ἐν τῷ ἀγρῷ σου, καὶ ἐπιλάθῃ δράγμα ἐν τῷ ἀγρῷ σου, οὐκ ἀναστραφήσῃ λαβεῖν αὐτό· τῷ προσηλύτῳ καὶ τῷ ὀρφανῷ καὶ τῇ χήρᾳ ἔσται, ἵνα εὐλογήσῃ σε κύριος ὁ θεός σου ἐν πᾶσι τοῖς ἔργοις τῶν χειρῶν σου.

If you are harvesting in your field and forget a sheaf there, do not go back to get it. It is to be left for the foreigner, the fatherless, and the widow, so that the LORD your God may bless you in all the work of your hands.