The book deals with the various religious sects, and also discusses the monotheistic religions and talks about some of their sects, and the author has taken care in his book to list the pagan beliefs and before the advent of Islam among the Arabs and the Roman philosophers, and one of the topics that the author did not overlook in the book is also the beliefs and religions of the Indian sages and others.

كتاب الممتع في شرح الآجرومية هو كتاب غني بالمعلومات القيمة والهامة، قد قدمه المؤلف بأسلوب بسيط وسلس وقد راعى أن يأتي بكل شفافية وسلاسة، فحقق الكتاب شهرة كبيرة.