Nicene and Post-Nicene Fathers, Ser. II, Vol. XIV:
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.: Canon LXXI

Canon LXXI.  (Greek lxxiv.)

Of those who leave in neglect their own people.

Moreover it seemed good that no one should be allowed to leave his chief cathedral and go to another church built in the diocese, or to neglect the care and frequent attendance upon his own cathedral by reason of too great care for his own affairs.

Notes.

Ancient Epitome of Canon LXXI.

It seemed good that no bishop shall translate himself to another see, leaving his own, nor that through a care for his own affairs he should neglect his diocese.

This is Canon vj. of Carthage, September, a.d. 401.

Johnson.

See Canons 53 (57), 56 (60).

“Principalis Cathedra,” his own Cathedral.