The Three Fundamental Principles

The Three Fundamental Principles (Thalâthatu ‘l-Usûl) of the Imaam and Mujaddid Muhammad bin 'Abdil-Wahhaab [Died 1206H] -may Allaah have mercy on him- is an important book which every Muslim should read and understand. 

The book deals with the three questions asked in the grave: Who is your Lord? What is your dîn? Who is your Prophet? 

You can download the ebook here. As such this book is beneficial for everyone insha Allah.

Arabic version

This translation is also Clearly written, well organized and well printed too . 

Translated/English version