Comparative study of proscription and approval through kalami approach

Proscription and approval are two precedent approaches among the Muslim petitioners and clergymen. Approval originates from Sunni principles while proscription has a root in Shiite ones. Since two tribes of shiite and Sunnite have had disputes on the issue of the caliphate of prophet this kind of above -mentioned issues caused a distinction between their approaches more and more. The studies done by researchers in academic centers and religeous schools are often descriptive and merely illustrative.A deep and precide look at both the issue of proscription and approval of kalami functional challenges of these views was the main reason for the study. In this research, in addition to descriping and explaining both categories. The kalami errors of theseviews are reviewed by examining the comprehensiveness or deficiency of religion from the perspective of approval and also the problem of excommunication and its relation with the proscription has been examined. Bisides the contrast and paradox of the tow approaches, equality and unity of the content of tow views and some of the positive and constructive aspects of the thought of approval have been other findings from the researcher.