SB 12.3.38
sudrah pratigrahisyanti
tapo-vesopajivinah
dharmam vaksyanty adharma-jña
adhiruhyottamasanam
Translation:
Uncultured men will accept charity on behalf of the Lord and will earn their livelihood by making a show of austerity and wearing a mendicant’s dress. Those who know nothing about religion will mount a high seat and presume to speak on religious principles.
Purport:
The epidemic of bogus gurus, swamis, priests and so forth is explicitly described here.