Imam A'zam Abu Hanifa, Imam Maalik, Imam Shaafi and Imam Ahmed bin Hambal (radi Allahu anhumul ajma'in)are the leaders of the four schools of Fiqh (Islamic Law).
"FIQH" is the Science of Islamic Law or Jurisprudence. It refers to the collection and compilation of Islamic laws based on the Holy Quran and the Sunnah of Sayyiduna Rasulullah (sallal laahu alaihi wasallam). These great Muslims devoted themselves to the task of developing the science of understanding Islamic Law and its practise.
Although they differed from each other, all the four great Imams had great respect for each other. They were all teachers and pupils of each other for the common goal of enhancing their knowledge about Islam. All of them were unanimous on Aqa'ids (Islamic Beliefs). We, as Muslims, must respect the different Sunni schools of thought.
Mohammed bin Idris Al Shaafa'ee (radi Allahu anhu) famously known as Imam Shaafa'ee was born in 150 A.H. and belonged to the Quraish tribe.
When the Governor of Iraq visited Madinatul Munawwarah, he was so impressed by Imam Shaafa'ee (radi Allahu anhu) that he persuaded him to become an Administrator. As Imam Shaafa'ee (radi Allahu anhu) was in conflict with the Government officials, he was deported to Iraq and brought in front of Haroun Rasheed who was very impressed with Imam Shaafa'ee (radi Allahu anhu).
On his way to Egypt, he lectured in Makkatul Mukarramah in the Haram Shareef. Imam Ahmed bin Hambal (radi Allahu anhu), who was studying at the time in Makkatul Mukarramah found great benefit from these lectures. Imam Shaafa'ee (radi Allahu anhu) then went to Baghdad where he spent 3 or 4 years and finally went to Egypt. He was now 50 years old.
In Egypt, scholars from all over the world came to study at his feet. His famous pupils were Sayyiduna Rabi bin Sulayman, Sayyiduna Abu Yacoob Al Ruwayta and Sayyiduna Abu Ebraheem bin Yahya Al Muzani (radi Allahu anhumul ajma'in).
HIS WORKS
Some reports say that he was injured seriously by a person called Fityan, while other reports mention that he passed away through natural illness on the last day of Rajab in the year 204 A.H.in Egypt. Maalik Al Kaamil, the Ayyubid Sultan, built a Mazaar for him in 608 A.H.