The most mysterious and wonderful story of Mehr is the fight with the primitive bull. Mithrahelps the earth to flourish and fertilize by killing the eternal bull and shedding its blood. This basic idea in Mehr religion influenced many cultures and cults. Belief in different forms of sacrifice as a way to evade evil forces and achieve blessing has been an integral part of the lives of peoplein the Iranian Plateau throughout history. For this reason, some sacred man or animal became the scapegoat for a tribe so that their sacrifice would diminish the sins, pains and sufferings of people. By these actions and using dramatic-ritual methods, people aimed toreconstruct the time and place of cosmic creation sothat they could find happiness and blessing once again by killing the primitive bull. Thus, in a public feast, they all ate a piece of the beef to transfer its power, fertility and blessing to themselves, andreached a sort of unity. This happy sacrificing became one of the themes in Persian literature and was recreated in the works of many poets and writers. Among these, NezamiGanjavi has paid especial attention to the ritual of sacrifice in the storyof "Haft Peykar". By the language of tales, he points to a number of sacrifice-related rituals including regeneration, creation, rain prayer, eclipse, and war. He uses literary devices such as allegory, allusion and ambiguity to draw a new and interesting image of these beliefs and ritual traditions.