"The time of creative activity, the gestation era of Moslem knowledge, passed away. Hajjaj choked the young life in its own blood, and the Abbaside dynasty, with kingly patriotism, sold the dearly-bought conquests of the nation, first to the Persians, and then to Turkish slaves, with the view of procuring an imaginary security for their throne. And thus there arose for the spiritual life also a new period. Already Wackidi had begun to work up into shape the mass of his traditionary stores, and busy himself in the department of scholastic industry. In the schools one could as little affect now the material tradition, or alter its nature, as attempt to change the organism of the new-born child. However arbitrary might be the invention of the 'Miraj' (Mahomed's heavenly journey), and other fabrications of the first century, they still formed in this way the positive element and soul of religious, political and social life. The schools, as always, confined their exertions to collecting, comparing, abbreviating, systematising, and commenting. The material was altogether divine; and any unprejudiced historical inquiry, any simple and natural interpretation of the Coran, any free judgment on tradition or its origin, was condemned as apostasy. The only task that remained was to work up, in scholastic form, the existing material; and in this way was developed a literature of boundless dimensions, which yet at bottom possessed nothing real. The whole spiritual activity of the Mohamedans, from the time of the prophet to the present day, is a dream; but it is a dream in which a large portion of the human race have lived; and it has all the interest which things relating to mankind always possess for man." Sir William Muir agrees with these views, subject to two considerations. He says:-- "The tendency to glorify Mohammed and the reciters of the traditions was considerably modified by the mortal strife which characterised the factions that opposed one another at the period, where, in attempting to depreciate one another, they would not be averse to perpetuating traditions in support of their contentions; such partisanship secured no insignificant body of historical fact, which otherwise would have been lost."