This Tareeqah was first manifested by Al-Imaam Ash-Shaafi’iy (Muhammad Bin Idrees Ash-Shaafi’iy) who passed away in the year 204 AH in Egypt. That was in his ‘Risaalah’ in Usool and it happened without him having any connection to the Mutakallimoon although he agreed with them in respect to utilising the intellectual (‘Aqliy) judgement to establish the Qawaa’id (principles) that he provided for Usool ul-Fiqh.

The most significant books written in Usool ul-Fiqh upon the method of the Mutakallimeen are:

1) ‘Al-Mu’tamad’ of Abu-l-Hasan Al-Basriy Al-Mu’taziliy who passed away in the year 463 AH.

2) ‘Al-Burhaan’ of Al-Imaam Al-Haramaini Abdul Malik Al-Juwainiy who passed away in the year 487 AH.

3) ‘Al-Mustasfaa Li Hujjat il-Islaam’ by Abu Haamid Al-Ghazaaliy who passed away in the year 505 AH.

These three books are the main references and all that came after them revolved around them whether in terms of compilation, summary or abridgment.

The following are some of the books that preceded them and some that came after them:

1) ‘At-Ta’reef Wa-l-Irshaad Fee Tarteeb Turuq Al-Ijtihaad’ written by Al-Qaadiy Abu Bakr Al-Baaqilaaniy Al-Maalikiy who passed away in the year 403 AH.

2) ‘Al-Lam’u’ authored by Abu Ishaq Ibraheem Ash-Sheeraaziy who passed away in the year 476 AH.

3) The book: ‘Al-Ihkaam Fee Usool ul-Fiqh’ by Abu Hasan Al Aamadiy Ash-Shaafi’iy who passed away in the year 731 AH.

4) ‘Al-Mahsool’ by Fakhr-ud-Deen Ar-Raaaziy who passed away in the year 731 AH.