Canon 10
That a presbyter shall not celebrate Mass for the dead after having a meal.
We have learnt that some presbyters were so audacious that they dared to offer a sacrifice of the Mass for the dead even after having drunk wine, probably because of the stupidity of a new audacious error, or because they had been corrupted by the odour of the ancient Priscillianist heresy. Hence, this admonition of what has been here clearly decided should be observed, that if a presbyter after our edict is caught in such insanity, that is that he offers a sacrifice on the altar without fasting, but after having a meal, he shall be deprived of his office and demoted by his bishop.
(trans. by M. Szada)