Passage 3.18.12
παραδίδωσι δὲ καὶ Πηλεὺς Ἀχιλλέα τραφησόμενον παρὰ Χίρωνι, ὃς καὶ διδάξαι λέγεται· Κέφαλος δὲ τοῦ κάλλους ἕνεκα ὑπὸ Ἡμέρας ἐστὶν ἡρπασμένος, καὶ ἐς τὸν γάμον τὸν Ἁρμονίας δῶρα κομίζουσιν οἱ θεοί. καὶ Ἀχιλλέως μονομαχία πρὸς Μέμνονα ἐπείργασται, Διομήδην τε Ἡρακλῆς τὸν Θρᾷκα καὶ ἐπʼ Εὐήνῳ τῷ ποταμῷ Νέσσον τιμωρούμενος. Ἑρμῆς δὲ παρʼ Ἀλέξανδρον κριθησομένας ἄγει τὰς θεάς, Ἄδραστος δὲ καὶ Τυδεὺς Ἀμφιάραον καὶ Λυκοῦργον τὸν Πρώνακτος μάχης καταπαύουσιν.
Peleus entrusts Achilles to Chiron to be raised, and Chiron, it is said, also taught him. Cephalus was seized by Day because of his beauty; and the gods bring gifts to the wedding of Harmonia. There is also depicted the single combat between Achilles and Memnon; likewise, Heracles is portrayed slaying the Thracian Diomedes and taking vengeance upon Nessus at the river Evenus. Hermes leads the goddesses before Alexander to be judged, and Adrastus together with Tydeus separate Amphiaraus and Lycurgus, son of Pronax, from their combat.