The Canons of the Synods of Sardica, Carthage, Constantinople, and Carthage Under St. Cyprian, Which Canons Were Received by the Council in Trullo and Ratified by II. Nice 143Canon CXX.

Of those who intrude upon peoples which they think belong to them, without the consent of those by whom they are held.

Item, it seemed good that whatever bishops seek the peoples whom they consider to pertain to their see, not by bringing their causes before the episcopal judges, but rush in while another is holding the place, all such, (whether said people are willing to receive them or no) shall lose their case. And whoever have done this, if the contention between the two bishops is not yet finished but still going on, let him depart who intruded without the decree of the ecclesiastical judges; nor let anyone flatter himself that he will retain [what he has seized] if he shall obtain letters from the primate, but whether he has such letters or has them not, it is suitable that he who holds and receives his letters should make it appear then that he has held the church pertaining to him peaceably. But if he has referred any question, let the cause be decided by the episcopal judges, whether those whom the primates have appointed for them, or the neighbouring bishops whom they have chosen by common consent.