Abu ʿAbdillah Muhammad ibn Idris al-Shafi‘i (Arabic: ابو عبدالله محمد بن إدريس الشافعيّ) was a Muslim jurist, who lived from (767 — 820 CE / 150 — 204 AH). He was active in juridical matters and his teaching eventually led to the Shafi’i school of fiqh (or Madh’hab) named after him. Hence he is often called Imam al-Shafi‘i. He is considered the founder of Islamic jurisprudence.
He authored more than 100 books.
Al-Risala — The best known book by al-Shafi’i in which he examined principles of jurisprudence. The book has been translated into English.
Kitab al-Umm – his main surviving text on Shafi’i fiqh
Musnad ash-Shafi’i (on hadith) – it is available with arrangement, Arabic ‘Tartib’, by Ahmad ibn Abd ar-Rahman al-Banna