Passage 5.4.9
Φιλίππου δὲ τοῦ Ἀμύντου οὐκ ἐθέλοντος ἀποσχέσθαι τῆς Ἑλλάδος, προσεχώρησαν μὲν ἐς τὴν συμμαχίαν τῶν Μακεδόνων οἱ Ἠλεῖοι στάσει κακωθέντες ὑπὸ ἀλλήλων, μαχεσθῆναι δὲ οὐχ ὑπέμειναν τοῖς Ἕλλησιν ἐναντία ἐν Χαιρωνείᾳ· τῆς δὲ ἐφόδου Φιλίππῳ τῆς ἐπὶ Λακεδαιμονίους μετέσχον κατὰ ἔχθος ἐς αὐτοὺς τὸ ἀρχαῖον, ἀποθανόντος δὲ Ἀλεξάνδρου Μακεδόσι καὶ Ἀντιπάτρῳ μετὰ Ἑλλήνων ἐπολέμησαν.
When Philip, son of Amyntas, was unwilling to abstain from involvement in Greece, the Eleans, weakened by internal strife among themselves, joined the alliance of the Macedonians; yet they did not endure taking the field against the Greeks at Chaeronea. But when Philip advanced against the Lacedaemonians, they participated in the campaign due to their ancient hostility towards them. After Alexander's death, they fought alongside the Greeks against the Macedonians and Antipater.