This book is one of the daughters of the foundations of Arabic rhetoric. He mentioned that the statement of the face of miracles in the Qur'an is one of the most important duties, and that Al -Jahiz in this book is to warn of the unaware of it, trying to creativity as much as possible, so he spoke in: The fact that the Qur'an and its faces are miraculous, denying poetry and prostration from the Qur'an