Passage 4.17.3
πρὶν δὲ ἢ παρανομῆσαι Λακεδαιμονίους ἐς τὸν Μεσσηνίων πόλεμον καὶ Ἀριστοκράτους τοῦ Ἀρκάδος τὴν προδοσίαν, ἀρετῇ τε οἱ μαχόμενοι καὶ τύχαις ἐκ τοῦ θεοῦ διεκρίνοντο. φαίνονται δὲ οἱ Λακεδαιμόνιοι καὶ ὕστερον, ἡνίκα ἐπὶ Αἰγὸς ποταμοῖς ταῖς Ἀθηναίων ναυσὶν ἀνθώρμουν, ἄλλους τε τῶν στρατηγούντων Ἀθηναίοις καὶ Ἀδείμαντον ἐξωνησάμενοι.
But until the Lacedaemonians committed unlawful deeds in the Messenian war, and before the treachery of Aristocrates the Arcadian, those engaged in the fighting were distinguished both by valor and by fortunes sent from the god. Afterwards, the Lacedaemonians are shown again, at the time when they attacked the ships of the Athenians at Aegospotami, to have bribed others among the Athenian generals, and Adeimantus in particular.