Council of Ephesus, Canon VIII

Our brother bishop Rheginus, the beloved of God, and his fellow beloved of God bishops, Zeno and Evagrius, of the Province of Cyprus, have reported to us an innovation which has been introduced contrary to the ecclesiastical constitutions and the Canons of the Holy Apostles, and which touches the liberties of all.  Wherefore, since injuries affecting all require the more attention, as they cause the greater damage, and particularly when they are transgressions of an ancient custom; and since those excellent men, who have petitioned the Synod, have told us in writing and by word of mouth that the Bishop of Antioch has in this way held ordinations in Cyprus; therefore the Rulers of the holy churches in Cyprus shall enjoy, without dispute or injury, according to the Canons of the blessed Fathers and ancient custom, the right of performing for themselves the ordination of their excellent Bishops.  The same rule shall be observed in the other dioceses and provinces everywhere, so that none of the God beloved Bishops shall assume control of any province which has not heretofore, from the very beginning, been under his own hand or that of his predecessors.  But if any one has violently taken and subjected [a Province], he shall give it up; lest the Canons of the Fathers be transgressed; or the vanities of worldly honour be brought in under pretext of sacred office; or we lose, without knowing it, little by little, the liberty which Our Lord Jesus Christ, the Deliverer of all men, hath given us by his own Blood.

Wherefore, this holy and ecumenical Synod has decreed that in every province the rights which heretofore, from the beginning, have belonged to it, shall be preserved to it, according to the old prevailing custom, unchanged and uninjured:  every Metropolitan having permission to take, for his own security, a copy of these acts.  And if any one shall bring forward a rule contrary to what is here determined, this holy and ecumenical Synod unanimously decrees that it shall be of no effect.

Translation: Henry R. Percival, The Seven Ecumenical Councils, NPNF II.14 (1900), via CCEL.