§2.48.1τῷ δὲ Διονύσῳ τῆς ὁρτῆς τῇ δορπίῃ χοῖρον πρὸ τῶν θυρέων σφάξας ἕκαστος διδοῖ ἀποφέρεσθαι τὸν χοῖρον αὐτῷ τῷ ἀποδομένῳ τῶν συβωτέων.
But for Dionysus, on the eve of the festival, each one sacrifices a pig before his doors and gives it to be carried away to the very swineherd who sold it to him.
§2.48.2τὴν δὲ ἄλλην ἀνάγουσι ὁρτὴν τῷ Διονύσῳ οἱ Αἰγύπτιοι πλὴν χορῶν κατὰ ταὐτὰ σχεδὸν πάντα Ἕλλησι· ἀντὶ δὲ φαλλῶν ἄλλα σφι ἐστὶ ἐξευρημένα, ὅσον τε πηχυαῖα ἀγάλματα νευρόσπαστα, τὰ περιφορέουσι κατὰ κώμας γυναῖκες, νεῦον τὸ αἰδοῖον, οὐ πολλῷ τεῳ ἔλασσον ἐὸν τοῦ ἄλλου σώματος· προηγέεται δὲ αὐλός, αἳ δὲ ἕπονται ἀείδουσαι τὸν Διόνυσον.
And the rest of the festival for Dionysus is celebrated by the Egyptians in almost all respects in the same way as by the Greeks, except for the choral dances; but instead of phalli, they have invented other things, namely, puppets pulled by strings about a cubit high, which the women carry around the villages, with the male member nodding, which is not much smaller than the rest of the body; a flute player goes before, and they follow behind, singing of Dionysus.
§2.48.3διότι δὲ μέζον τε ἔχει τὸ αἰδοῖον καὶ κινέει μοῦνον τοῦ σώματος, ἔστι λόγος περὶ αὐτοῦ ἱρὸς λεγόμενος.
But as to why it has the male member so large and moves that part alone of the body, there is a sacred story told about it.