Canon 3
If clerics bind themselves in conspiracy, either by recklessly rebellious oaths or by written [agreement], and prepare a scheme or a sly accusation against the bishop, since this is also completely prohibited to the laymen, if [those clerics] having been admonished refuse to make amends, they should be completely deprived of their particular rank in such a way, however, that if they want to file a lawsuit against their bishop, or against each other, they should be invited to the nearest [ecclesiastical] council.
(trans. J. Szafranowski)