2Origins of Muhammadan JurisprudenceOrigins of Muhammadan JurisprudenceJosef Schacht - 1389 AHجوزيف شاخت - 1389 AHMai Buga LittafiOxford At The Clarendon PressShekarar Bugawa1950 AHNau'ikanUsul al-FiqhShafi da ba'a sani baKwafiRabaTambayi AI