ἕως οὗ ἡμέρα διαυγάσῃ

From LSJ

κέρκος τῇ ἀλώπεκι μαρτυρεῖ → you can tell a fox by its tail, small traits give the clue to the character of a person

Source

Russian (Dvoretsky)

пока не рассветет

Dutch (Woordenboekgrieks.nl)

totdat de dag haar licht verspreidt