Monks, there are five kinds of teachers in the world. One kind of teacher is impure in behavior, while claiming to be pure. His disciples know about this, but think, ‘It would be unpleasant for him if we inform the householders. And it’s because of him that we’re honored with gifts of robe-cloth, almsfood, dwellings, and medicinal supplies. How, then, can we inform them? He’ll be known through his own actions.’ The disciples conceal the impure behavior of such a teacher, and the teacher expects them to do so.