Passage 3.10.1
οὐ πολλῷ δὲ ὕστερον τὸν ἀγῶνα ἔθηκαν τῶν Ἰσθμίων οἱ ἐπὶ λακωνισμῷ φεύγοντες Κορίνθιοι . οἱ δὲ ἐν τῇ πόλει τότε μὲν τῷ Ἀγησιλάου δείματι ἡσύχαζον· ἀναζεύξαντος δὲ ἐς τὴν Σπάρτην, οὕτω καὶ αὐτοὶ μετὰ Ἀργείων τὰ Ἴσθμια ἄγουσιν. ἀφίκετο δὲ καὶ αὖθις ἐπὶ Κόρινθον στρατιᾷ· καὶ---ἐπῄει γὰρ Ὑακίνθια---ἀφίησι τοὺς Ἀμυκλαιεῖς οἴκαδε ἀπελθόντας τὰ καθεστηκότα τῷ τε Ἀπόλλωνι καὶ Ὑακίνθῳ δρᾶσαι. ταύτην τὴν μοῖραν ἐπιθέμενοι καθʼ ὁδὸν Ἀθηναῖοι καὶ Ἰφικράτης διέφθειραν·
Not long afterward, the Corinthians who were in exile due to their pro-Spartan sympathies established their own Isthmian Games. Those who remained in the city at the time kept quiet through fear of Agesilaus. But when he withdrew to Sparta, they themselves resumed holding the Isthmian Games jointly with the Argives. Agesilaus again marched against Corinth with his army, yet—as the Hyacinthia festival was approaching—he dismissed the Amyclaeans to return home and carry out the prescribed rites honoring Apollo and Hyacinthus. On their way home, these men were attacked and destroyed by Iphicrates and the Athenians.