A small religious community, which exists mostly in Mumbai, is Zoroastrianism. The follower is called Parsi because the religion arrived in India from Persia. This religion was established by Zarathustra in 6th or 7th century BC. The followers of this religion exiled from Iran in the 7th century AD. because of religious persecutions by the Muslims. They arrived in Gujarat region of India.
The Parsis believe in the existence of one invisible God. They believe that there is a continuous war between the good forces (forces of light) and the evil forces (forces of darkness). The good forces will win if people will do good deeds think good and speak well. God is represented in their temples through fire, which symbolizes light. The holiest place for them is the village of Udvada in Gujarat, India. The holy language of the Parsis is an ancient language spoken in Iran, Avesta. The Parsis believe that fire, water, air and earth are pure element to be preserved and therefore they do not cremate or bury their dead ones but leave them on high towers, specially built for this purpose, to be eaten by hawks and crows.
The Parsis are less then 0.02% of India's population but their contribution to India is much more than their proportion in India's population. Some Parsis were main figures in establishing the Indian Nationalist movement. They were the pioneers in establishing the modern Indian industry. The rich Parsi families contributed enormously to establish institutions of all kinds in India. Even today some of the bigger finance houses in India belong to followers of this religion.