Allah Almighty created man and send him to the world to establish his deputation and delegation. As both good and evil are found in man, man has always preferred evil to good. Allah Almighty send prophets in different ages to save them from evil and to purify them. In this way, prophets purified people to make them able to establish his deputation in the world. This pedigree continued till the Holy Prophet (P.B.U.H) came to the world. After holy prophet (P.B.U.H), this responsibility was given to the companions of holy prophet (P.B.U.H) and Muslim Ummah. The companions of holy prophet (P.B.U.H) fulfilled this responsibility in excellent manner. But after that when the Government was changed from Caliphate to Kingship, the evil trends again began to flourish in man. Then this task was fulfilled by the mysts and Sufis. They struggled alot to purify the spirits of people and established an institution which was hammed as mysticism.