1Death and mourning rituals in ancient Iranian religious belief and Islam by relying on Ferdowsi's Shahistan

The origins of death should be investigated by the origin of death at the same time. In ancient Persian mythology and culture death ,believing in other world, paradise and hell have been mentioned as a phenomenon. The Study of human history shows a mixture of life and death, and consequently there are different views about life and death. In some cases ,death and life have been considered as an integrated part of each other like day and night and some others believed that the conflict between these two phenomena is a fundamental contradiction between humans and other creatures. However, life and death being together or in opposition, are inseparable companions. The inseparability of life and death is one of the fundamental principles of the world. Life ended in death and it can be meaningful by death. Comprehending life can only be achieved in the shadow of death. Since the reality of life ended in death rationally and punctually. Thus we can say that we die because we live and exist, so the reality of life is distinguished through the death. The present study relies on the book of the Shahnameh to the attitudes and beliefs of our ancestors about death and its rituals and comparison the Iranian people's rituals of the Earth in the face of death, before Islam and after Islam.