Porphyry, Life of Pythagoras, 7
“Eudoxus, in the seventh book of his Description of the Earth, says that in addition to such purity, he (Pythagoras) was so eager to avoid things related to murder that he not only abstained from eating animals, but also would not even associate with butchers or hunters.”
πλὴν τοσαύτῃ γε ἁγνείᾳ φησὶν Εὔδοξος ἐν τῇ ἑβδόμῃ
τῆς γῆς περιόδου κεχρῆσθαι καὶ τῇ περὶ τοὺς φόνους
φυγῇ καὶ τῶν φονευόντων, ὡς μὴ μόνον τῶν ἐμψύχων
ἀπέχεσθαι, ἀλλὰ καὶ μαγείροις καὶ θηράτορσι μηδέ-
ποτε πλησιάζειν.