As well as several works and commentaries on usul al - fiqh , he produced a voluminous legal corpus .
Al - Hilli 's role in shaping Twelver jurisprudence is of great importance .
As well as several works and commentaries on usul al - fiqh , Al - Hilli produced a voluminous legal corpus .
Al - Hilli 's role in shaping Twelver jurisprudence is of great importance .