: margolluth : the early development of mohammedanism ( london - 1914 ) . mohhammed and the ris of islam . ( london 1905 ) . the relations between arabs and israelits prior the rise of islam ( london 1924 ) . muir willam : the caliphate its rise dicine and fall ( london 1891 ) . Lthe incyclopeadia of islam ( london and leyden 1913 ) .