ἕως οὗ ἡμέρα διαυγάσῃ

From LSJ

τὰν ἐπὶ τᾶς → Either with this or on this | Come back victorious or dead

Plutarch, Moralia, 241

Russian (Dvoretsky)

пока не рассветет

Dutch (Woordenboekgrieks.nl)

totdat de dag haar licht verspreidt