Βύστραν τιν’ ἐκ φύλλων τινῶν
A plug from some cabbages
Βύστραι· αἱ τῶν λαχάνων ἐνθέσεις. ἔνιοι δὲ τοὺς ἐκ τῶν λαχάνων ψωμούς
plugs: spices of the cabbages. Some they call the cabbages’ bits.
ἐνδεδύκασι δὲ κιθῶνας λινέους περὶ τὰ σκέλεα θυσανωτούς, τοὺς καλέουσι καλασίρις: ἐπὶ τούτοισι δὲ εἰρίνεα εἵματα λευκὰ ἐπαναβληδὸν φορέουσι. οὐ μέντοι ἔς γε τὰ ἱρὰ ἐσφέρεται εἰρίνεα οὐδὲ συγκαταθάπτεταί σφι: οὐ γὰρ ὅσιον.  ὁμολογέουσι δὲ ταῦτα τοῖσι Ὀρφικοῖσι καλεομένοισι καὶ Βακχικοῖσι, ἐοῦσι δὲ Αἰγυπτίοισι καὶ Πυθαγορείοισι: οὐδὲ γὰρ τούτων τῶν ὀργίων μετέχοντα ὅσιον ἐστὶ ἐν εἰρινέοισι εἵμασι θαφθῆναι. ἔστι δὲ περὶ αὐτῶν ἱρὸς λόγος λεγόμενος.
They wear linen tunics with fringes hanging about the legs, called “calasiris,” and loose white woolen mantles over these. But nothing woolen is brought into temples, or buried with them: that is impious.  They agree in this with practices called Orphic and Bacchic, but in fact Egyptian and Pythagorean: for it is impious, too, for one partaking of these rites to be buried in woolen wrappings. There is a sacred legend about this.
Apul. Apol. 56
Quipped lana, signissimi corporis excrementum, pecori detracta iam inde Orphei et Pythagorae scitis profanes vestitus est.
The wool, of course, as dirt part of a weak body, is taken from the animals and for that, according to the Orphic and Pythagorean dogmas, only the impure wear it.
Pausanias, Attika (1) 37.4
ᾠκοδόμηται δὲ κατὰ τὴν ὁδὸν ναὸς οὐ μέγας καλούμενος Κυαμίτου: σαφὲς δὲ οὐδὲν ἔχω λέγειν εἴτε πρῶτος κυάμους ἔσπειρεν οὗτος εἴτε τινὰ ἐπεφήμισαν ἥρωα, ὅτι τῶν κυάμων ἀνενεγκεῖν οὐκ ἔστι σφίσιν ἐς Δήμητρα τὴν εὕρεσιν. ὅστις δὲ ἤδη τελετὴν Ἐλευσῖνι εἶδεν ἢ τὰ καλούμενα Ὀρφικὰ ἐπελέξατο, οἶδεν ὃ λέγω.
On the road stands a small temple called that of Cyamites. I cannot state for certain whether he was the first to sow beans, or whether they gave this name to a hero because they may not attribute to Demeter the discovery of beans. Whoever has been initiated at Eleusis or has read what are called the Orphica knows what I mean.
Note: Cyamites means beans. Orphica was a poem which described aspects of the Orphic cult.
Plutarch. Mor. 157c
τὸ δ’ ἀπέχεσθαι σαρκῶν ἐδωδῆς, ὥσπερ Ὀρφέα τὸν παλαιόν ἱστοροῦσι, σόφισμα μᾶλλον ἢ φυγὴ τῶν περὶ τὴν τροφὴν ἀδικημάτων ἐστί.
Not eating meat, as they say that the old Orpheus did, is more a technique than a prevention of food consumption’s misdeed.