At this point, many hackles are raised and well-rehearsed objections voiced. It is vital to understand that mainstream Sufism is not, and never has been, a doctrinal system, or a school of thought - a madhhab. It is, instead, a set of insights and practices which operate within the various Islamic madhhabs; in other words, it is not a madhhab, it is an ilm. And like most of the other Islamic ulum, it was not known by name, or in its later developed form, in the age of the Prophet (upon him be blessings and peace) or his Companions. This does not make it less legitimate. There are many Islamic sciences which only took shape many years after the Prophetic age: usul al-fiqh, for instance, or the innumerable technical disciplines of hadith.
Now this, of course, leads us into the often misunderstood area of sunna and bid'a, two notions which are wielded as blunt instruments by many contemporary activists, but which are often grossly misunderstood. The classic Orientalist thesis is of course that Islam, as an 'arid Semitic religion', failed to incorporate mechanisms for its own development, and that it petrified upon the death of its founder. This, however, is a nonsense rooted in the ethnic determinism of the nineteenth century historians who had shaped the views of the early Orientalist synthesizers (Muir, Le Bon, Renan, Caetani). Islam, as the religion designed for the end of time, has in fact proved itself eminently adaptable to the rapidly changing conditions which chara