Many of the masters who followed them and who expanded the...
Many of the masters who followed them and who expanded the Sufi orders were also Sunnis in their following of the law. Even so, these masters traced their spiritual chain, which in the spiritual life is like the genealogical chain of a person, through their previous masters to Ali. Also the results of their visions and intuitions as transmitted to us convey mostly truths concerning divine unity and the stations of the spiritual life which are found in the sayings of Ali and other Shi'ite Imams.
This can be seen provided we are not affected by some of the striking and even sometimes shocking expressions used by these Sufi masters and consider the total content of their teachings with deliberation and patience. Sanctity resulting from initiation into the spiritual path, which Sufis consider as the perfection of man, is a state which according to Shi'ite belief is possessed in its fullness by the Imam and through the radiance of his being can be attained by his true followers.
And the Spiritual Pole (qutb), whose existence at all times is considered necessary by all the Sufis - as well as the attributes associated with him - correlates with the Shi'ite conception of the Imam. According to the saying of the Household of the Prophet, the Imam is, to use the Sufi expression, Universal Man, the manifestation of the Divine Names and the spiritual guide of the lives and actions of men.
Therefore, one could say, considering the Shi'ite concept of walayat, that Sufi masters are "Shi'ite" from the point of view of the spiritual life and in connection with the source of walayat although, from the point of view of the external form of religion they follow the Sunni schools of law.
It is necessary to mention that even in classical Sunni treatises it has sometimes been said that the spiritual method of the "Path," or the "techniques" whereby one comes to know and realize himself, cannot be explained through the external forms and teachings of the Shari'ah. Rather these sources claim that individual Muslims themselves have discovered many of these methods and practices, which then have become accepted by God, such as is the case with monasticism in Christianity.