This paper deals with one of the schools in the principles of Islamic jurisprudence [ushul al fiqh]; that is, takhrij al furu' ala al ushul, which seems to be little paid intensive attention, since its existence is known late if compared to other previous schools such as the Mutakallimun [Syafi'iyyah], the Hanafiyyah [thariqah al fuqaha], the convergence [thariqah al jam'], and the Syathibiyyah…
Every science has it own characteristic.So, a lecturer or a college student who wants to study science has to know which components there are in the science that he wants to study about.A man who wants to determine whether a hadith is true or not, he ought to know these three things, there are five ways to know for everyone who wants to examine that hadith....etc.