The Canons of the Council in Trullo; Often Called The Quinisext Council 71Canon LXXI.

Those who are taught the civil laws must not adopt the customs of the Gentiles, nor be induced to go to the theatre, nor to keep what are called Cylestras, nor to wear clothing contrary to the general custom; and this holds good when they begin their training, when they reach its end, and, in short, all the time of its duration. If any one from this time shall dare to do contrary to this canon he is to be cut off.