The Canons of the Councils of Ancyra, Gangra, Neocæsarea, Antioch and Laodicea, which Canons were Accepted and Received by the Ecumenical Synods 67Canon IV.

If any bishop who has been deposed by a synod, or any presbyter or deacon who has been deposed by his bishop shall presume to execute any part of the ministry, whether it be a bishop according to his former custom, or a presbyter, or a deacon, he shall no longer have any prospect of restoration in another Synod; nor any opportunity of making his defence; but they who communicate with him shall all be cast out of the Church, and particularly if they have presumed to communicate with the persons aforementioned, knowing the sentence pronounced against them.