An important feature of Islamic political philosophy is that prophethood and prophet have an important status in the structure of political thought. Prophet [Nabi] has been considered in two important respects in the classic Islamic political philosophy. Firstly, the Prophet is the head of the political structure and the persistence of the city [Medina] depends on him. Secondly, law originates from him in Medina. In the Islamic thought, the Prophet, who is in contact with the metaphysical world, receives knowledge in the form of Shari'a and delivers it to all people. At the time of the presence to the Prophet, the Qur’an and his behavior put the bases and guidelines for the acts of other people. But, what determine the guidelines for the present day Muslims are the Qur’an and the conducts of the 14 infallibles. Thus, if there is a clear and direct text in the Qur’an and the narrations of the infallibles in a particular case, there is no need for legislation. Otherwise, the necessary verdict is derived from religious reasonings. Jurisprudence is responsible for the elicitation and explanation of the necessary verdict on the basis of its specific regulations. However, if there are no texts and it is impossible to any other documentations from the behavior of the infallibles, the legislations have to be in accord with Shari'a or, at least, there should not be any contradictions between them. As a result, law has a deep relationship with Shari'a and Prophethood and the Prophet is considered as the fundamental origin of all the laws which man needs.