Written in the second islamic century by al imam al shafii d 204ah 820ad the founder of one of the four sunni schools of law this important work gives the fundamental principles of islamic jurisprudence and its influence continues to the present day. Reviewed in the united states on august 10 2007 al shafiis risala treatise on the foundations of islamic jurisprudence written by imam al shaafi ra born 150 hijri of the islamic calender some 1250 years back is the best book on usul al fiqh treatise on the foundations of islamic jurisprudence. Written in the second islamic century by al imam al shafii the founder of one of the four sunni schools of law this important work gives the fundamental principles of islamic jurisprudence and how its influence continues to the present day. Written in the second islamic century by al imam al shafii d 204ah 820ad the founder of one of the four sunni schools of law this important work gives the fundamental principles of islamic jurisprudence and its influence continues to the present day. Written in the second islamic century by al imam al shafii d 204ah 820ad the founder of one of the four sunni schools of law this important work gives the fundamental principles of islamic jurisprudence and its influence continues to the present day