Theoretical explanation of the poverty line from the perspective of Islamic economics based on statistical standards of Iranian economy

Economic justice is one of the principles of Islamic economics and researchers in this field have done extensive theories and studies in order to base economic policy recommendations on this important principle. Basing the theory of economic justice on "entitlement" requires the focus of this group of studies on explaining this idea more and more accurately in Islamic economics. Economic justice in Islamic teachings requires that the society be covered by at least four entitlements: adequacy, balance, share of production factors and customary moderation. In this article, with a descriptive-analytical method and using mathematical methods, we will explain the lower limit of poverty and provide solutions to estimate it, while comparing it with the poverty line in a conventional economy. The result of this article shows that the poverty line and the lower limit of sufficiency are two completely separate criteria and according to the narrations, the first turning point of income distribution can be considered as sufficiency and in most cases the sufficiency is above the poverty line.