Is one who places a book containing Sharia violations in his library, and then his children read it and are influenced by its contents, sinful, even though the novel does not advocate for an abomination?

There is no sin in someone taking a narration without your knowledge or permission. Nor is it forbidden to benefit from what is permissible out of fear that it might be used unknowingly for something forbidden. However, if you fear the narration's influence on your children, place it where their hands cannot reach it. We have already cautioned that it is preferable to disregard such narrations.