Does one become a disbeliever if disbelief occurs to his mind or if he acts upon it while ignorant that it is disbelief?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: If a person is ignorant and strange matters occur to his mind, which he considers forbidden, but which are in fact disbelief, and he is negligent and does not ask about them, does he become a disbeliever if he acts upon them? If a person is ignorant and matters occur to his mind which he considers forbidden.

Answer:
But which are in fact disbelief, and he is negligent and does not ask about them. Does it occur to his mind, and does he not act upon it? If it is merely that he is tormented by whispers in his heart and he did not speak or act, there is no blame on him. The Ummah is excused for error, forgetfulness, and what their souls suggest, as long as they do not speak or act. Mere whispers have no effect and cause no harm. However, if he performs this act, if he performs this forbidden act or speaks it, he is held accountable, as indicated in the hadith which shows that if she speaks or acts, she is held accountable for her action.