The influence of heirs classes in fulfilment of the A'oul (shares’ reduction of heirs); A comparative study of jurisprudence of islamic sects

Oul, that is decreasing the inheritance share (sahmolerth) of heirs (worrath) and increasing the number of shares to provide the share for all heirs, is a soloution by jurisconsult (Foqaha) when ejtema of inheritance rights of heirs is on remained bequest (tarake) of the begone, and the assets could not provide peoples inheritance share while there is no way to esqat or deprive the heirs. Foqaha announced two opposite viewpoints for the problem where the opponents reject the Oul for contradicting Fiqhi principles and present Naqs(decrese) in the assets shares of a particular group of share owners as a solution. this idea also faces various problems. This research using description and analysis by refering to library sources analyzes the inheritance share of triple groups of brothers and sisters in Qoran kareem and concludes; while the stronger guild gets priority over the weaker one and it becomes a base for giving shares to inherit-ants, it contradicts using Oul and presents a solution for resolve the problems and disagreements in opponents view.