χεὶρ ὁρᾷ τὸ δράσιμον

From LSJ

τίκτει τοι κόρος ὕβριν, ὅταν κακῷ ὄλβος ἕπηται ἀνθρώπῳ καὶ ὅτῳ μὴ νόος ἄρτιος ᾖ → satiety engenders hybris when great prosperity attends on a base man or one whose mind is not set up right

Source

Greek > English (Woodhouse)

his hand sees its duty