Passage 1.32.4
καὶ ἀνδρός ἐστιν ἰδίᾳ μνῆμα Μιλτιάδου τοῦ Κίμωνος, συμβάσης ὕστερόν οἱ τῆς τελευτῆς Πάρου τε ἁμαρτόντι καὶ διʼ αὐτὸ ἐς κρίσιν Ἀθηναίοις καταστάντι. ἐνταῦθα ἀνὰ πᾶσαν νύκτα καὶ ἵππων χρεμετιζόντων καὶ ἀνδρῶν μαχομένων ἔστιν αἰσθέσθαι· καταστῆναι δὲ ἐς ἐναργῆ θέαν ἐπίτηδες μὲν οὐκ ἔστιν ὅτῳ συνήνεγκεν, ἀνηκόῳ δὲ ὄντι καὶ ἄλλως συμβὰν οὐκ ἔστιν ἐκ τῶν δαιμόνων ὀργή. σέβονται δὲ οἱ Μαραθώνιοι τούτους τε οἳ παρὰ τὴν μάχην ἀπέθανον ἥρωας ὀνομάζοντες καὶ Μαραθῶνα ἀφʼ οὗ τῷ δήμῳ τὸ ὄνομά ἐστι καὶ Ἡρακλέα, φάμενοι πρώτοις Ἑλλήνων σφίσιν Ἡρακλέα θεὸν νομισθῆναι.
There is also a separate monument to one man, Miltiades son of Kimon, who later met his end, having failed at Paros and subsequently being brought to trial by the Athenians for this reason. At this place, throughout every night, one may perceive the neighing of horses and the fighting of men. However, for someone deliberately seeking a clear view no good comes of it, yet for one who witnesses the events unintentionally and without anticipating, there is no wrath from the divine powers. The Marathonian people honor those who died in the battle by calling them heroes, as well as Marathon—from whom the district took its name—and Heracles, claiming that they were the first among Greeks to recognize Heracles as a god.