The Explanation Of Three Fundamental Principles
By Shaykh Dr. Saalih Al-Fawzaan
Shaykh Saalih Al-Fawzaan said: So these are called Usool because other
than it, from the affairs of the religion, are built upon them. Due to
this, they are called Usool; because the matter of the religion is built
upon them and all of the religion revolves around these three principles.