 Legal scholars in both Sunni and Shī‘ī Islamic traditions share Quranic interpretation, the "Sunnah", and "Ijma‘" "consensus" as sources of Islamic law and judicial decisions ("ḥukm").However, Twelvers of the Ja‘farī school of law utilize ‘aql whereas Sunnis use "qiyas" "analogical reasoning" as the fourth source of law.Among Twelvers, Akhbārīs (associated with exotericism and traditionalism and theological schools in Qom) and Usulis (associated with esotericism and rationalism and theological schools in Baghdad) were contending subschools