Letter 3,24 - to Bishop Leontius. March 593

"We are keeping our brother and fellow-bishop Castor here, because of his body's ill health. And because he is not well enough now to return to his church, for that reason, in his absence, we have decided that the task of that church's visitation should be delegated to your Fraternity.
We advise your Charity to carry out all of its services so efficiently that through your presence, the church does not feel that its own priest is absent.
And whatever you think should be consecrated for the advantage of the same church, you will have free scope in every way, relying on our permission."

Cited from: The Letters of Gregory the Great, trans. John R.C. Martyn (Toronto: PIMS, 2004), I: 251.