Canon 55
About the eruption of clergy who offend the bishop.
If a cleric insults a bishop, let him be deposed. For you shall not revile the leader of your people (Ex. 22:28).
Greek original
Εἴ τις κληρικὸς ὑβρίσοι τὸν ἐπίσκοπον, καθαιρείσθω· ἄρχοντα γὰρ τοῦ λαοῦ σου οὐκ ἐρεῖς κακῶς.
Parallel canons
Ап.3139IVВс.8Трул.34Лаод.57Карф.7