Canon 4
That a clergyman, expelled by the council, will stubbornly perform divine services; then he cannot have restoration to his rank.
If a bishop, deposed by the Council, or a presbyter, or a deacon, deposed by his bishop, dares to perform any service - whether a bishop according to his previous custom, or a presbyter, or a deacon - then there is no hope left for him either to be restored at another Council or to be justified. In addition, everyone who is in communion with them should be excommunicated from the Church, especially if they, knowing the decision made against the above-mentioned persons, dare to have communication with them.
Greek original
Εἴ τις ἐπίσκοπος ὑπὸ συνόδου καθαιρεθείς, ἢ πρεσβύτερος, ἢ διάκονος, ὑπὸ τοῦ ἰδίου ἐπισκόπου, τολμήσειέ τι πρᾶξαι τῆς λειτουργίας, εἴτε ὁ ἐπίσκοπος κατὰ τὴν προάγουσαν συνήθειαν, εἴτε ὁ πρεσβύτερος, εἴτε ὁ διάκονος· μηκέτι ἐξὸν εἶναι αὐτῷ, μηδὲ ἐν ἑτέρᾳ συνόδῳ ἐλπίδα ἀποκαταστάσεως, μήτε ἀπολογίας χώραν ἔχειν, ἀλλὰ καὶ τοὺς κοινωνοῦντας αὐτῷ πάντας ἀποβάλλεσθαι τῆς ἐκκλησίας, καὶ μάλιστα, εἰ μαθόντες τὴν ἀπόφασιν τὴν κατὰ τῶν προειρημένων ἐξενεχθεῖσαν, τολμήσειαν αὐτοῖς κοινωνεῖν.
Parallel canons
Ап.28IВс.5IIВс.6IVВс.29Антиох.1215Сард.314Карф.2965Вас.88