каменная глыба

From LSJ

μὴ κακὸν εὖ ἔρξῃς· σπείρειν ἴσον ἔστ' ἐνὶ πόντῳ → do no good to a bad man; it is like sowing in the sea

Source

Russian > Greek

πέτρα, μάρμαρος, λᾶας, λᾶς, λίθος