Is it sufficient for one who enters a gathering containing wrongs to disapprove of them only in his heart?

Question:
Honorable Shaykh, may Allah grant you success. A questioner says: If I enter a gathering and find wrongs in it, is it sufficient for me to disapprove of them in my heart, or must I leave?

Answer:
No, it is not disapproval in the heart; it is disapproval with the tongue, disapproval with the tongue. If you are unable to disapprove with the tongue, you disapprove in your heart and do not sit in the gathering that contains wrongs. You leave and do not sit saying, "I disapprove in my heart." No, it is not permissible for you to sit. Yes.