Passage 5.1.9
Ἠλείου δὲ ἦν Αὐγέας· οἱ δὲ ἀποσεμνύνοντες τὰ ἐς αὐτόν, παρατρέψαντες τοῦ Ἠλείου τὸ ὄνομα, Ἡλίου φασὶν Αὐγέαν παῖδα εἶναι. τούτῳ βοῦς τῷ Αὐγέᾳ καὶ αἰπόλια τοσαῦτα ἐγένετο ὡς καὶ τῆς χώρας αὐτῷ τὰ πολλὰ ἤδη διατελεῖν ἀργὰ ὄντα ὑπὸ τῶν βοσκημάτων τῆς κόπρου· Ἡρακλέα οὖν εἴτε ἐπὶ μοίρᾳ τῆς Ἠλείας εἴτε ἐφʼ ὅτῳ δὴ καὶ ἄλλῳ μισθῷ πείθει οἱ καθῆραι τῆς κόπρου τὴν γῆν.
Augeas was an Elean; but those who glorify him distort his origin from "Elean," claiming instead that Augeas was the son of the Sun (Helios). Augeas possessed such numbers of cattle and goats that eventually, due to the dung produced by his herds, much of his land had become uncultivated and waste. Therefore, either in return for a share of Elis or for some other wage, he persuaded Heracles to clear the land of the dung.