The book The Concept of Heresy and Its Impact on the Confusion of Contemporary Fatwas is an original and applied study of the concept of heresy in Islamic law, in which the author explains the concept of heresy in language and law, and the division of heresy into ranks, explaining the meaning of heresy in the Sunnah as understood by the Salaf of the Ummah from the great Imams of jurisprudence in the different periods of Islamic jurisprudence.