Passage 4.17.5
τοῖς οὖν Λακεδαιμονίοις, ὅτε δὴ μάλιστα ἤνθησαν καὶ Ἀθηναίων τε τὸ ναυτικὸν καθῃρήκεσαν καὶ Ἀγησίλαος κεχείρωτο τὰ πολλὰ ἤδη τῆς Ἀσίας, τότε σφίσι τὴν ἀρχὴν πᾶσαν οὐκ ἐξεγένετο ἀφελέσθαι τὸν Μῆδον, ἀλλὰ σφᾶς ὁ βάρβαρος περιῆλθε τῷ ἐκείνων εὑρήματι, ἐς Κόρινθον καὶ Ἄργος καὶ ἐς Ἀθήνας τε καὶ Θήβας χρήματα ἀποστείλας· ὅ τε ὀνομαζόμενος Κορινθιακὸς πόλεμος ἀπὸ τούτων ἐξήφθη τῶν χρημάτων, ὡς ἀπολείπειν Ἀγησίλαον ἀναγκασθῆναι τὰ ἐν τῇ Ἀσίᾳ.
Thus the Lacedaemonians, precisely at the time when they flourished greatly, having subdued the naval power of the Athenians, while Agesilaus had already secured control over most of Asia, could not succeed in entirely overthrowing the empire of the Medes. Instead, the Barbarian outmaneuvered them by employing their own invention against them, dispatching money to Corinth, Argos, Athens, and Thebes. Indeed, the war known as the Corinthian was kindled by these very funds, compelling Agesilaus himself to abandon his achievements in Asia.