Muhammad ibn Idris ash-Shafi‟i (150-205 AH / 767-820 C.E) is considered to be the architect of Usul al-Fiqh. He was born in Gaza (Palestine) and when he was two years old his mother took him to Makkah. Imam Shafi‟i is from the tribe of Quraysh and his lineage meets with the Prophet (saw) at Abdu Manaf.

At an early age his mother took him to the local Kuttab to memorize the Qur‟an, but since they were poor and could not afford the tuition, he was not allowed to attend the classes. He used to stay within an earshot of the class listening to the instructions of the Shaykh and memorising them. When the teacher would leave, young Shafi‟i would go to help the students with their memorisation. The teacher learned about this and allowed young Shafi‟i in the class with the condition that he would help the students with their memorisation.

When he was about seven years old he had memorised the Qur‟an, and they went to Masjid Al-Haram where he studied the Arabic language. By the time he graduated, he had learned all the versions of the classical Arabic language. His statements are considered to be standards in the Arabic language. After completing his Arabic studies, a man advised him to study Hadith, Fiqh, and „Ulum-ul-Quran, and so he moved to Madinah. There he studied under Imam Malik ibn Anas prior to his death in 179 A.H. It was directly from Imam Malik that Imam Shafi‟i learned the Muwatta. He then travelled to Iraq, where he stayed as the guest of Muhammad bin Al-Hasan, the student of Abu Hanifah. Imam Shafi‟i would debate and study with both Muhammad bin al-Hasan and Qadi Abu Yusuf. He then returned to Madinah, around 174 A.H., to visit with his old teacher Imam Malik. After the death of Imam Malik, Imam Shafi‟i travelled to Yemen. There he met Umar bin Abi Salamah, teacher of al Awaza‟i, a great scholar in Usul al-Fiqh.

While there, some problems arose between the Khaleefah Haroon ar-Rashid and Ahl-ul- Bayt. Imam Shafi‟i was accused of siding with the Ahl-ul-Bayt against the Khaleefah, and was arrested and taken to Baghdad to the court of the Khaleefah. After a discussion with the Khaleefah to clear himself of any wrong doing, Imam Shafi‟i was invited by the Khaleefah to advise him. It is recorded that he was so firm and strong in his advice to the Khaleefah that the Khaleefah wept.

While in Baghdad he met Abdur Rahman bin al Mahdi (Scholar of Hadith) in 195 A.H., who asked him to write a book explaining the methodology of understanding Fiqh. In this work, Imam Shafi‟i combined both the School of Hadith in Madinah and School of Ra‟ee in Kufah. He was able to do this because he was aquainted with both schools. In Madinah he studied under Imam Malik and in Kufah he met Muhammad bin al-Hasan (follower of Hanafi school of Fiqh). The outcome of this book was called Ar-Risala (This old version does not exist today).

Imam Shafi‟i then decided to move to Egypt. While in Egypt Imam Shafi‟i rewrote his book Ar-Risala. In the new Risala, he established new principles in Usul al-Fiqh. Thus, his changing to a new methodology changed his Fatwas because the pattern for giving Fatwas is as follows:

Usul ul Fiqh -> Fiqh -> Fatwa.

Some think that Imam Shafi‟i changed his Fiqh due to the new circumstances or environment in Egypt. We must understand that Imam Shafi‟i did not rewrite his book for the sake of it, or because he changed his location. There are really only two possibilities for the re-writing of Ar-Risala. Imam Shafi‟i had put in his mind that he wanted to reach a specific conclusion and in order to do so he would have to change the basis for those predetermined conclusions, or Imam Shafi‟i found that the old basis he had used was wrong, and so it was necessary to redo or to revise his basis for deriving his Fiqh.

If there is a change in Usul al-Fiqh there will obviously be a different ruling and not vice-versa, because a Mujtahid is not allowed to think of a ruling before deciding on which sources to extract the rulings from. Therefore, as a result of changing the Usul al-Fiqh there were different Fatwas. The reason for the change was that he thought that his earlier Usul al-Fiqh was wrong. This change was not due to time or place. Therefore, his Madhab had changed completely because his Usul al-Fiqh had changed. This very important point, if it is not understood correctly could prove to be misleading.

Imam Shafi‟i never debated in „Ilm-ul-Kalaam. Regarding it he used to say; “Debating in Fiqh, at the very least would lead the people to make fun of you, for example, saying the Diyah for murder is an egg. Debating in „Ilm ul Kalaam, they would say that you are deviating and making a Bid‟ah. So go and debate in Fiqh, and leave „Ilm ul Kalaam.”

Imam Shafi‟i‟s books include:

 Ar-Risalah.

 Al-Umm.

 Jimaa ul-Ilm.

 Ibtaal ul-Istihsan.

 Musnad Ash-Shafi‟i‟.

 Ahkaam-ul-Qur‟an.

Those who are considered to be from his Madhab included:

 Jalaluddin as-Suyuti.

 An-Nawawi.

 Ibn Kathir.

 Ibn Hajar al-Asqalani.

 Al-Muzni.

 Al-Ghazali.

 Al-Khatib al-Baghdadi.