εὔκαρπον ἐκβάλλειν στάχυν

From LSJ

καὶ νῦν ἀτεχνῶς ἐθέλω παρέχειν ὅ τι βούλει σοι, πλὴν κωλακρέτου γάλα πίνειν → and now I want to provide you with absolutely anything you want, except paymaster's milk to drink

Source

Greek > English (Woodhouse)

yield a rich harvest