al-Risala fi usul al fiqh treatise on the the foundations of Islamic jurisprudence - Shafii, Muhammad ibn Idris 767 or 768-820.; Khadduri, Majid 1908-2007 (Cambridge The Islamic Texts Society, 1987)
Keywords: Islamic law -- Interpretation and construction -- Early works to 1800; Shafiites -- Early works to 1800