Canon 2 Bishops not to intervene beyond their own diocese

Bishops are not to go beyond their diocese into churches outside their bounds, nor to confuse the churches; but, according to the canons, the bishop of Alexandria is to administer the affairs in Egypt only; and the bishops of the East are to govern the East only, the prerogatives given in the canons of Nicaea to the church of the Antiochenes being preserved; and the bishops of the Asian diocese are to govern the affairs of the Asian diocese only; and those of the Pontic, the affairs of the Pontic only; and those of Thrace are to administer the affairs of the Thracian only. And bishops are not to go beyond their diocese uninvited for an ordination or for any other ecclesiastical administrations. And the canon written above concerning the dioceses being observed, it is evident that the synod of the province will govern the affairs of each province, according to what was defined at Nicaea. But the churches of God among the barbarian nations must be administered according to the custom of the Fathers which has prevailed.