The Holy Canons Ephesus Canon 2
Canon 2 Provincial bishops who joined the apostasy fall from rank
Κανόνες τῆς ἐν Ἐφέσῳ Ἁγίας καὶ Οἰκουμενικῆς Γ´ Συνόδου
The Third Ecumenical Council · Ephesus, 431 · convened by the emperor Theodosius the Younger · Third Ecumenical Council: Ephesus (431) on the map
And if any provincial bishops were absent from the holy synod, and have joined themselves to the apostasy, or should attempt to join it, or even, having subscribed to the deposition of Nestorius, have run back to the assembly of the apostasy, these, according to what has seemed good to the holy synod, are to be altogether alien from the priesthood and to fall from their rank.
Εἰ δέ τινες ἐπαρχιῶται ἐπίσκοποι ἀπελείφθησαν τῆς ἁγίας συνόδου, καὶ τῇ ἀποστασίᾳ προσετέθησαν, ἢ προστεθῆναι πειραθεῖεν, ἢ καὶ ὑπογράψαντες τῇ Νεστορίου καθαιρέσει, ἐπαλινδρόμησαν πρὸς τὸ τῆς ἀποστασίας συνέδριον· τούτους πάντη κατὰ τὸ δόξαν τῇ ἁγίᾳ συνόδῳ ἀλλοτρίους εἶναι τῆς ἱερωσύνης, καὶ τοῦ βαθμοῦ ἐκπίπτειν.
The Third 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.