Passage 4.21.5
ἐπειδὴ δὲ ἡμέρα τε ἦν καὶ ἀλλήλους καθορᾶν ἐδύναντο, ἐνταῦθα Ἀριστομένης καὶ Θέοκλος ἐπειρῶντο ἐς πᾶσαν ἀπόνοιαν προάγειν τοὺς Μεσσηνίους, ἄλλα τε ὁπόσα εἰκὸς ἦν διδάσκοντες καὶ Σμυρναίων τὰ τολμήματα ἀναμιμνήσκοντες, ὡς Ἰώνων μοῖρα ὄντες Γύγην τὸν Δασκύλου καὶ Λυδοὺς ἔχοντας σφῶν τὴν πόλιν ὑπὸ ἀρετῆς καὶ προθυμίας ἐκβάλοιεν.
But when day came and they were able to see one another clearly, Aristomenes and Theoclus at once sought to urge the Messenians to every kind of desperate courage, instructing them in all considerations that were fitting and especially recalling the daring deeds of the Smyrnaeans—how, though they were Ionians, through bravery and resolve they had driven out Gyges, son of Dascylus, and the Lydians who had occupied their city.