Passage 2.14.2
Δυσαύλην δέ φασιν ἀδελφὸν Κελεοῦ παραγενόμενόν σφισιν ἐς τὴν χώραν καταστήσασθαι τὴν τελετήν, ἐκβληθῆναι δὲ αὐτὸν ἐξ Ἐλευσῖνος ὑπὸ Ἴωνος, ὅτε Ἴων Ἀθηναίοις ὁ Ξούθου πολέμαρχος τοῦ πρὸς Ἐλευσινίους ᾑρέθη πολέμου. τοῦτο μὲν δὴ Φλιασίοις οὐκ ἔστιν ὅπως ὁμολογήσω, κρατηθέντα μάχῃ τινὰ Ἐλευσινίων φυγάδα ἀπελαθέντα οἴχεσθαι, τοῦ πολέμου τε ἐπὶ συνθήκαις καταλυθέντος πρὶν ἢ διαπολεμηθῆναι καὶ ἐν Ἐλευσῖνι αὐτοῦ καταμείναντος Εὐμόλπου.
They say that Dysaules, the brother of Celeus, came into their land and established their rites; but that he was driven out of Eleusis by Ion, when Ion, the son of Xuthus, was selected by the Athenians as military leader in the war against the Eleusinians. This version, however, I cannot accept from the people of Phlius,—that a fugitive from Eleusis, having been defeated in battle, fled into exile, given that the war ended by a treaty before being fought out to a decisive conclusion, and that Eumolpus himself remained at Eleusis.