Finality or Ultimate of the prophethood and the ensuing Imamate leadership

From the perspective of Shiite scholars, the secret of the ultimate of the prophethood of the Mohammad is to be found in the comprehensiveness of Islam. This means that Islam is a religion of laws and legislation provisions, to all human that fulfilled human life in all spheres of material and spiritual wants and needs. On the other hand, in the philosophy and theory of Imamate in Shiite thought, there is always an exponent of God's book. The innocent Imams and the final Mahdi serve as the index raised to know right from wrong and can provide innocent interpretation of the Quran and the religion of God. Correlation is thus in the relationship between them, which means binding the prophecy in the book of God is infallible Imam. There are intellectual and narrative arguments and reasons that imply this. In the eyes of reason, for protecting a school, two things are required: 1. It requires text books; 2. It requires teachers and coaches. Holy Quran is the text as needed to guide the people of God (which all Islamic sects agree) that has been sent by God. Of the Shiite perspective, after the demise of the Prophet, the Imam serves as a coach and teacher that has always been on the side of the Quran, the Holy Book, who innocently explained that and provided and protected it from distortion.
From the perspective of evidence from hadith and traditions, Imamate can also be cited in the Quran and the sayings and traditions. By explaining the roles of leadership in the field of religion, it can be compatible with the finality or ultimate prophet and emphasize that leadership and answers the questions and doubts about the incompatibility of the two together.