The Holy Canons Chalcedon Canon 14
Canon 14 Readers and cantors may not marry heterodox women
Κανόνες τῆς ἐν Χαλκηδόνι Ἁγίας καὶ Οἰκουμενικῆς Δ´ Συνόδου
The Fourth Ecumenical Council · Chalcedon, 451 · convened by the emperor Marcian · Fourth Ecumenical Council: Chalcedon (451) on the map
Since in some provinces it has been permitted to readers and cantors to marry, the holy synod has decreed that it is not lawful for any of them to take a heterodox wife. And those who have already had children from such a marriage, if they have already baptised those born of them among the heretics, are to bring them to the communion of the catholic Church; but if they have not baptised them, they may no longer baptise them among the heretics, nor indeed join them in marriage to a heretic, or a Jew, or a pagan, unless perhaps the person being joined to the orthodox one should promise to pass over to the orthodox faith. And if anyone should transgress this decree of the holy synod, let him be subject to a canonical penalty.
Ἐπειδὴ ἔν τισιν ἐπαρχίαις συγκεχώρηται τοῖς ἀναγνώσταις, καὶ ψάλταις, γαμεῖν, ὥρισεν ἡ ἁγία σύνοδος, μὴ ἐξεῖναί τινι αὐτῶν ἑτερόδοξον γυναῖκα λαμβάνειν. Τοὺς δὲ ἤδη ἐκ τοιούτου γάμου παιδοποιήσαντας, εἰ μὲν ἔφθασαν βαπτίσαι τὰ ἐξ αὐτῶν τεχθέντα παρὰ τοῖς αἱρετικοῖς, προσάγειν αὐτὰ τῇ κοινωνίᾳ τῆς καθολικῆς ἐκκλησίας· μὴ βαπτίσαντας δέ, μὴ δύνασθαι ἔτι βαπτίζειν αὐτὰ παρὰ τοῖς αἱρετικοῖς, μήτε μὴν συνάπτειν πρὸς γάμον αἱρετικῷ, ἢ Ἰουδαίῳ, ἢ Ἕλληνι, εἰ μὴ ἄρα ἐπαγγέλλοιτο μετατίθεσθαι εἰς τὴν ὀρθόδοξον πίστιν τὸ συναπτόμενον πρόσωπον τῷ ὀρθοδόξῳ. Εἰ δέ τις τοῦτον τὸν ὅρον παραβαίη τῆς ἁγίας συνόδου, κανονικῷ ὑποκείσθω ἐπιτιμίῳ.
The Fourth Ecumenical Council, the canons
English: this site's translation of the Greek beside it. Greek: the text of the Pedalion, as transcribed at users.uoa.gr/~nektar and corrected here. About these texts.