Are there forbidden fields of knowledge, such as the philosophy of other religions and the books of non-Muslim philosophers, or of Muslim philosophers who deviated from the framework of Islam? Is it forbidden or undesirable to delve into such knowledge? How can these ideas be countered without knowing them? And is a novel that presents the doubts of atheists and then refutes them forbidden?

Philosophy involves delving into the unseen and subjecting the divine and prophetic to rational scrutiny, which has led to serious deviations among philosophers. For this reason, the early generations (Salaf) warned against engaging in it. An exception is made for those who study it with the aim of critiquing it and are qualified to do so, but this is difficult for most students of knowledge. Al-Ghazali condemned knowledge that leads to harm, or usually harms its possessor, or does not benefit the one who engages in it, such as searching into divine mysteries. Therefore, people should be restrained from researching them and should be referred back to what the Sharia has explicitly stated. As for writing philosophical novels, there is a concern that they might cause discord or doubt, because the methods of argumentation derived from revelation are the closest, easiest, and most beneficial.