Passage 2.5.2
ὁ δὲ Ἀσωπὸς οὗτος ἄρχεται μὲν ἐκ τῆς Φλιασίας, ῥεῖ δὲ διὰ τῆς Σικυωνίας καὶ ἐκδίδωσιν ἐς τὴν ταύτῃ θάλασσαν. θυγατέρας δὲ αὐτοῦ γενέσθαι Φλιάσιοί φασι Κόρκυραν καὶ Αἴγιναν καὶ Θήβην· ἀπὸ μὲν δὴ Κορκύρας καὶ Αἰγίνης τὰς νήσους Σχερίαν καὶ Οἰνώνην καλουμένας μετονομασθῆναι, ἀπὸ δὲ Θήβης τὴν ὑπὸ τῇ Καδμείᾳ κληθῆναι. Θηβαῖοι δὲ οὐχ ὁμολογοῦσι, φάμενοι τοῦ Βοιωτίου τὴν Θήβην Ἀσωποῦ καὶ οὐ τοῦ παρὰ Φλιασίου εἶναι.
This Asopus has its source in the territory of Phlius, flows through the land of Sicyon, and empties into the sea near that region. The Phliasians claim that his daughters were Corcyra, Aegina, and Thebe; and they say that from Corcyra and Aegina came the renaming of the islands previously called Scheria and Oenone, while from Thebe came the naming of the city under the Cadmeia. The Thebans, however, disagree, asserting that their Thebe is named after the Boeotian Asopus, rather than after the river from the land of Phlius.