Do not ignore a lost object

"Thus you shall do with his donkey, and you shall do the same with his garment, and you shall do likewise with anything lost by your countryman, which he has lost and you have found. You are not allowed to neglect them.

Hebrew

ג וְכֵן תַּעֲשֶׂה לַחֲמֹרוֹ, וְכֵן תַּעֲשֶׂה לְשִׂמְלָתוֹ, וְכֵן תַּעֲשֶׂה לְכָל-אֲבֵדַת אָחִיךָ אֲשֶׁר-תֹּאבַד מִמֶּנּוּ, וּמְצָאתָהּ: לֹא תוּכַל, לְהִתְעַלֵּם. {ס}

Greek

3 οὕτως ποιήσεις τὸν ὄνον αὐτοῦ καὶ οὕτως ποιήσεις τὸ ἱμάτιον αὐτοῦ καὶ οὕτως ποιήσεις κατὰ πᾶσαν ἀπώλειαν τοῦ ἀδελφοῦ σου, ὅσα ἐὰν ἀπόληται παρ᾿ αὐτοῦ καὶ εὕρῃς· οὐ δυνήσῃ ὑπεριδεῖν. --

• Parashah: Ki Tetze
• Sefer HaChinuch: 539
• Mishneh Torah: Injuries — Robbery and Lost Property

• Deuteronomy 22:3

Enumeration and classification from BibleData. The Greek is the Septuagint reading of the same verse, carried by the source for comparison.