Therefore Sufis leave belief and disbelief to the grade of evolution of every individual soul. The Murshid's work is to kindle the fire of the heart, and to light the torch of the soul of his mureed, and to let the mureed believe and disbelieve as he chooses, while journeying through the path of evolution. But in the end all culminates in one belief, Hurna man am, that is, "I am all that exists"; and all other beliefs are preparatory for this final conviction, which is called Haq al-Iman in the Sufi terminology.