This article is going to find and review the roots of two concepts in political jurisprudence from Majlisi"s viewpoint. Firstly, the question of the legitimate temporal political authority (saltanat-i mashru"ah). Secondly, the guardianship of the jurist (wilayat- i faqih) and its parameters. The main source of the research will be Majlisi"s "Ayn al- hayat. It will be proved that wilayat- i faqih has been dealt with by Imami scholars a long before Imam Khomeini.