In Shia Islamic jurisprudence, 'aql is the process of using intellect or logic to deduce law. Both Sunni Islam and Shi'a Islam share Qur'anic interpretation, the Sunnah, and Ijma' (consensus) as sources of Islamic law. Shi'a Islam uses 'aql (intellect), where as Sunni Islam uses qiyas (analogical reasoning) as the fourth source of law. In Shi'a Islam the gates of Ijtihad were never closed and with the use of 'aql which is based upon intellect and logic, allows for Shi'a Islamic law to be more dynamic as more issues arise that were not dealt with in the Quran or Sunnah. Shiʻa Islam (Arabic شيعى follower; English has traditionally used Shiite) makes up the second largest sect of believers in Islam, constituting about 30%–35% of all Muslim. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... In Sunni Islamic jurisprudence, Qiyas is the process of analogical reasoning from a known injunction (nass) to a new injunction. ... Shia Islam ( Arabic شيعى follower; English has traditionally used Shiite or Shiite) is the second largest Islamic denomination; some 20-25% of all Muslims are said to follow a Shia tradition. ... This article or section does not adequately cite its references or sources. ... Intelligence is a general mental capability that involves the ability to reason, plan, solve problems, think abstractly, comprehend ideas and language, and learn. ... Logic, from Classical Greek λόγος logos (meaning word, account, reason or principle), is the study of the principles and criteria of valid inference and demonstration. ... Shia Islam ( Arabic شيعى follower; English has traditionally used Shiite or Shiite) is the second largest Islamic denomination; some 20-25% of all Muslims are said to follow a Shia tradition. ... Sharia (Arabic شريعة also Sharia, Shariah or Syariah) is traditional Islamic law. ...