"The Misguided Man": Is It Obligatory to Reveal His Matter to the People?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: If a person is calling people to misguidance, and many people do not know his condition, and we have clarified it to him, but he did not stop his calling, should his matter be concealed, or should it be exposed so that people may beware of him?

Answer:
Look, my brothers, the one whose sin is confined to himself and whose harm does not extend to others is the one whose matter is concealed and who is advised. As for the one whose sin extends and whose harm reaches others, such as one who holds a false doctrine or has deviant thought, he harms others. Therefore, it is necessary to clarify the matter, meaning he should first be advised. If he repents, praise be to Allah. If he does not repent and persists, and people are being deceived by him, then it is necessary to expose him, because this is part of giving sincere advice to Allah, His Book, His Messenger, the leaders of the Muslims, and their common people. So there is a difference between the sin whose harm is confined to its owner and the sin whose harm is not confined to its owner. Yes.