Passage 8.21.3
τῇ δὲ Κλειτορίων πόλει τὸ μὲν ὄνομα ἀπὸ τοῦ παιδὸς ἐτέθη τοῦ Ἀζᾶνος, οἰκεῖται δʼ ἐν ὁμαλῷ, κύκλῳ δὲ ὄρη περιέχοντά ἐστιν οὐ μεγάλα. Κλειτορίοις δὲ ἱερὰ τὰ ἐπιφανέστατα Δήμητρος τό τε Ἀσκληπιοῦ, τρίτον δέ ἐστιν Εἰλειθυίας εἶναι, καὶ ἀριθμὸν ἐποίησεν οὐδένα ἐπʼ αὐτοῖς· Λύκιος δὲ Ὠλὴν ἀρχαιότερος τὴν ἡλικίαν, Δηλίοις ὕμνους καὶ ἄλλους ποιήσας καὶ ἐς Εἰλείθυιαν τε , εὔλινόν τε αὐτὴν ἀνακαλεῖ--- δῆλον ὡς τῇ πεπρωμένῃ τὴν αὐτήν---καὶ Κρόνου πρεσβυτέραν φησὶν εἶναι.
The city of Kleitor took its name from the son of Azan, and lies situated in a plain surrounded in a circle by mountains that are not high. Among the Cleitorians the most notable sanctuaries are those of Demeter, of Asclepius, and the third is said to be that of Eileithyia, although its sacred songs have no orderly arrangement. Olen the Lycian, who lived in an earlier age, composed hymns for the Delians, including one to Eileithyia, in which he clearly calls her "spinner of destinies," thus evidently identifying her with Fate, and declares her to be older even than Cronus.