Passage 6.10.6
μετὰ δὲ Ἴκκον καταπαλαίσας παῖδας Παντάρκης ἕστηκεν Ἠλεῖος ὁ ἐρώμενος Φειδίου. ἐπὶ δὲ τῷ Παντάρκει Κλεοσθένους ἐστὶν ἅρμα ἀνδρὸς Ἐπιδαμνίου· τοῦτο ἔργον μέν ἐστιν Ἀγελάδα , ἕστηκε δὲ ὄπισθεν τοῦ Διὸς τοῦ ἀπὸ τῆς μάχης τῆς Πλαταιᾶσιν ἀνατεθέντος ὑπὸ Ἑλλήνων. ἐνίκα μὲν δὴ τὴν ἕκτην Ὀλυμπιάδα καὶ ἑξηκοστὴν ὁ Κλεοσθένης, ἀνέθηκε δὲ ὁμοῦ τοῖς ἵπποις αὑτοῦ τε εἰκόνα καὶ τὸν ἡνίοχον.
After Iccus, stands Pantarces the Elean, Phidias' beloved, who won among boys in wrestling. Beside Pantarces is the chariot of Cleosthenes, a man of Epidamnus. This chariot is the work of Ageladas and stands behind the Zeus dedicated by the Greeks after their victory in the battle of Plataea. Cleosthenes gained victory in the sixty-sixth Olympiad, and he set up together with his horses a statue of himself as well as of his charioteer.