Passage 6.21.3
διαβάντων δὲ τὸν Κλάδεον τάφος τε Οἰνομάου γῆς χῶμα περιῳκοδομημένον λίθοις ἐστὶ καὶ ὑπὲρ τοῦ μνήματος ἐρείπια οἰκοδομημάτων, ἔνθα τῷ Οἰνομάῳ τὰς ἵππους αὐλίζεσθαι λέγουσιν. ὅροι δὲ πρὸς Ἀρκάδας τῆς χώρας τὰ μὲν παρόντα Ἠλείοις, τὰ δὲ ἐξ ἀρχῆς οἱ αὐτοὶ Πισαίοις καθεστήκεσαν ἀνέχοντες κατὰ τάδε. διαβάντων δὲ ποταμὸν Ἐρύμανθον κατὰ τὴν Σαύρου καλουμένην δειράδα τοῦ Σαύρου τε μνῆμα καὶ ἱερόν ἐστιν Ἡρακλέους, ἐρείπια ἐφʼ ἡμῶν· λέγουσι δὲ ὡς ὁδοιπόρους τε καὶ τοὺς προσοικοῦντας ὁ Σαῦρος ἐκακούργει, πρὶν ἢ παρὰ Ἡρακλέους τὴν δίκην ἔσχε.
After crossing the Cladeus, there is the tomb of Oenomaus, a mound of earth enclosed by stones, and above the monument are ruins of buildings, the place where they say Oenomaus stabled his horses. Concerning the boundaries with Arcadia, some of the present territory belonged to the Eleans, while other parts had originally been held by the Pisatans. These boundaries extend as follows: After crossing the river Erymanthus near the ridge known as the Hill of Sauros, there is the tomb of Sauros and a sanctuary of Heracles, both of which stood as ruins in my day. They say that Sauros used to harm travelers and the people living nearby, until he received justice at the hands of Heracles.