Author: Shaykhul-Islaam Muhammad Bin Abdul-Wahhaab رحمه الله

Description: This small treatise Al-Qawaa'id Al-Arba' (The Four Principles), is a book of `Aqeedah (Creed) based on the Qur'aan and the authentic Sunnah.

It follows on from his book Al-Usool At-Thalaatha (The Three Fundamentals) and deals with the correct understand of tawheed (monotheism) and its opposite - shirk which may take one out of the fold of Islaam. Hence, the necessity of understanding what it is so that it may be avoided.