What is the guidance regarding selling the books of the people of misguidance at the book fair, and what should be done with such books found in one's home?

Question:
May Allah reward you, Honorable Shaykh. A questioner says: My father bought the book *Al-Futuhat al-Makkiyyah* from the book fair out of ignorance. He also bought the book *Al-Aghlal* some time ago. In fact, bookshop dealers exploit people to make them buy these deviant books from them at high prices. The question is: What is my duty toward my father? And what should I do with these books? I have previously discussed the book *Al-Aghlal* with him, but he did not pay attention to me.

Answer:
This is undoubtedly due to the negligence of supervision over the fairs and the books. Those who run these fairs are either ignorant people who do not distinguish between books of misguidance and books of good, or they are misguided atheists who do not distinguish between the two. It is obligatory that there be strict supervision of these fairs by the people of knowledge and the people of creed to prevent such books. As for your father, he bought this book in ignorance and did not know, or he bought *Al-Aghlal* and did not know. It is obligatory for you to burn the two books; take the initiative to burn the two books, because they are books of atheism and misguidance, and they are not to be kept in your home. Perhaps a woman or a child might take them or read them and grow up influenced by them. Destroy them. Yes.