Canon 42 Wandering hermits: a monastery or the desert

As for the so-called hermits, who, dressed in black and with long hair on their heads, go about the cities, living among lay men and women and bringing insult upon their own profession, we decree that, if they choose to have their hair shorn and to receive the habit of the other monks, they be settled in a monastery and enrolled among the brethren. But if they do not choose this, they are to be driven out of the cities altogether and to dwell in the deserts, from which they also fashioned their names for themselves.