This book consists of several scholarly explanations of the classical work on Tawheed and Shirk. "The Four Rules", which was written by the Imaam and Mujaddid of the 13th century, Muhammad bin ‘Abdil-Wahhaab, may Allah have mercy on him. It is called "The Four Rules" because it consists of four fundamental basics which one can use to distinguish a believer from a disbeliever and a polytheist from a monotheist. This treatise is considered one of the Imam’s more significant works. Even though it may be more concise than some of his other works, it is just as comprehensive in terms of the information covered and points of benefit discussed. Shaikh Saalih Al-Fawzaan said: "If you come to learn and understand these rules, it will become easier for you to afterward understand the Tawheed that Allah sent His Messenger with and revealed His books upon, and it will become easier for you to understand the Shirk that Allah warned against and whose danger and harm in this life and the Hereafter He spoke about." In an effort to bring the most benefit to the English reader, translations of eight separate explanations of this monumental work have been included in this present publication. It is hoped that the inclusion of all these explanations will provide readers with a comprehensive understanding of this book and the subjects it covers.

About the Authors:  The various authors who have explained this treatise consist of some of the well known and respected people of knowledge of this era, alive and deceased, and all of whom are from Saudi Arabia. May Allah reward them for their efforts. A brief biographical account of each author has been included before each treatise within this publication.