 al-Ash'ari developed an "acquisition" or "dual-agency" form of compatibilism, in which human free will and divine "jabr" were both asserted, and which became a cornerstone of the dominant Ash'ari position.In Shia Islam, Ash'aris understanding of a higher balance toward predestination is challenged by most theologists.Free will, according to Islamic doctrine is the main factor for man's accountability in his/her actions throughout life.