An Explanation of Shaykhul-Islaam Muhammad Ibn ‘Abdul-Wahhaab’s ‘Thalaathatul-‘Usool’.
So the Prophets and Messengers, and whomsoever called with their call, continued to follow the call to the Religion of Islaam, and to act upon it, and leave off everything else other than it, until the messages were completed with the message of the Prophet (sallallaahu ’alayhi wa sallam).
So this book called al-Usooluth-Thalaathah is from the best books of ’aqeedah(creed) for the seeker of knowledge who is at the beginners level, or at an intermediate level. That means that no one from amongst the students of knowledge is without need of it for the explanation of the correct ’aqeedah and whatever opposes it. Rather, no one from amongst the Muslims under obligation is free of need from it. So it is built to be memorized and have its meaning understood, and it is also befitting of being taught by the teachers and Scholars, not to mention that the issue of’aqeedah discussed herein are of an introductory nature, with respect to the knowledge of the Islaamic ’aqeedah, which should be studied before every other book.