This Is My Faith - Al-fatlawi, Ali - الصفحة ١٣ - Preface
everything, but I think I have enough of Islamic culture to hopefully answer your questions, Inshallah.
Anwar: I hear that religiously following a clerk (Taqlid) is not permitted when it comes to the Principles (Osul Al-Din). Why is that?
Hasan: First of all, you need to know about these Principles (Osul Al-Din).
Anwar: Yes, with all pleasure!
Hasan: There are five fundamental elements on which the religion of Islam is based on. Each of them is called a Principle (Asl).
The first Principle is Monotheism (Tawhid) and it means to believe that Allah is the only God Who is unmatched, Who has no associates and Who holds the entire superior and perfect qualities. This is emphasized by the Noble Quran in one of its chapters which is also named after this principle:
﴾Say: He is Allah, the One۞Allah, the eternally Besought of all۞He begetteth not nor was begotton۞And there is none comparable unto Him﴿١١٢; ١-٤