An explanation of the treatise (The Three Fundamentals) by Sheikh al-Islam Muhammad ibn Abd al-Wahhab, may God have mercy on him (d. 1206 AH). These fundamentals are the servant’s knowledge of his Lord, his religion, and his Prophet Muhammad, may God bless him and grant him peace. The treatise also included issues that a person must learn, types of worship, the pillars of Islam, the pillars of faith and their fruits, an introduction to the level of ihsan, disbelief in tyrants, the conditions of people with their rulers, and the necessity of referring knowledge back to God and His Messenger, may God bless him and grant him peace. It was published transcribed from tapes, then reviewed by His Eminence the Sheikh, who added what was necessary and deleted what was not needed.