Passage 4.19.1
Λακεδαιμονίοις δὲ παραυτίκα μὲν ὑπὸ ἀνδρῶν ἀπηγγέλλετο αὐτομόλων, ὡς Ἀριστομένης ἐπανήκοι σῶς· νομιζομένου δὲ ἀπίστου κατὰ ταὐτὰ ἢ εἴ τινα τεθνεῶτα ἐλέγετο ἀναβιῶναι, παρʼ αὐτοῦ τοιόνδε Ἀριστομένους ὑπῆρξεν ἐς πίστιν. Κορίνθιοι Λακεδαιμονίοις δύναμιν ὡς συνεξαιρήσοντας τὴν Εἶραν ἀποστέλλουσι.
At that moment, deserters reported to the Lacedaemonians that Aristomenes had returned alive. But since this seemed as incredible to them as if someone were said to have risen from the dead, Aristomenes himself soon provided clear evidence of his survival. For the Corinthians sent a force to aid the Lacedaemonians in capturing Eira.