Passage 2.34.3
τοῦτο μὲν πρὸς τὸν Λίβα σφίσιν ἐστὶν εὑρημένον· τὰς δὲ νησῖδας αἳ πρόκεινται τῆς χώρας ἀριθμὸν ἐννέα οὔσας Πέλοπος μὲν καλοῦσι, τοῦ θεοῦ δὲ ὕοντος μίαν ἐξ αὐτῶν οὔ φασιν ὕεσθαι. τοῦτο δὲ εἰ τοιοῦτόν ἐστιν οὐκ οἶδα, ἔλεγον δὲ οἱ περὶ τὰ Μέθανα, ἐπεὶ χάλαζάν γε ἤδη θυσίαις εἶδον καὶ ἐπῳδαῖς ἀνθρώπους ἀποτρέποντας.
This is their device against the southwest wind: the small islands lying in front of this region, nine in number, they call the Islands of Pelops. They say that, when the god sends rain, one of these islands alone receives none. Whether or not this is truly so, I do not know; but so claimed the people at Methana, for indeed I have myself seen men warding off hailstorms by sacrifices and incantations.