Passage 8.4.5
ἐπὶ δὲ Ἀζᾶνι τῷ Ἀρκάδος τελευτήσαντι ἆθλα ἐτέθη πρῶτον· εἰ μὲν καὶ ἄλλα, οὐκ οἶδα, ἱπποδρομίας δὲ ἐτέθη. Κλείτωρ μὲν δὴ ὁ Ἀζᾶνος ἐν Λυκοσώρᾳ τε ᾤκει καὶ ἦν τῶν βασιλέων δυνατώτατος καὶ Κλείτορα ᾤκισεν ἀφʼ αὑτοῦ πόλιν, Ἄλεος δὲ εἶχε τὴν πατρῴαν λῆξιν·
After Azan, the son of Arcas, had died, funeral games were first established honoring him. Whether there were other contests, I do not know, but certainly a horse-race was instituted. This Azanian, Cleitor, lived in Lycosura, was the most powerful among the kings, and founded the city of Cleitor, naming it after himself. Aleus, meanwhile, inherited and held his ancestral territory.