Ibn Taymiyyah wrote this book to respond to the Book of Al -Nisafi in the controversy, and the book of Nasafi represents a late stage of authorship in the science of controversy, where the science of controversy mixed with many of the Investigations of logic and philosophy, and was distinguished by the length of the phrase and after the reference, and the use of common and metaphorical words in the introductions, and the status of observations is a place The pieces, and this method was popular with those working in science in the seventh century AH, thinking that they control the rules of reasoning, and trained them to reiterate similarities and objections and respond to them, and many of them considered this one of the highest levels of legal knowledge, while other scholars saw that they violated the method of the predecessor The correct one in controversy and debate, and among these scholars was Ibn Taymiyyah, who responded to this method, so he responded to the Book of Al -Nasafi, and he overturned the rules he decided in the controversy, and between the right path in that, so he showed amazing ingenuity, and wide knowledge of the dialectical methods, who are approved and late