Answered by Sayyidi Habib Umar bin Hafiz (may Allah protect him and benefit us by him)
I have some books which contain deviant beliefs and opinions. What should I do with them?
To remove harm from the path of the believers is one of the branches of faith so you should remove these books from the path of the believers by burning them or disposing of them in any other way that is appropriate.
Someone once sent a batch of books full of innovations to one of the pious. He asked him some time later if he had received them. He replied that he had received them and that it had only taken one matchstick to burn all the books.
Books which contain deviant beliefs either within Islam or outside Islam should only be in the possession of specialists who are able to refute these beliefs and clarify the truth. It is better for people who do not possess this knowledge to dispose of these books.
Life is short, the journey is long and we only have a small amount of provision. We do not have to time to pay attention to things which distract us.