<Ul> <Li> According to the Akhbari view, the only sources of law are the Quran and the Hadith, and any case not explicitly covered by one of these must be regarded as not having been provided for . </Li> <Li> According to the majority Usuli view, it is legitimate to seek general principles by induction, in order to provide for cases not expressly provided for . This process is known as ijtihad, and the intellect is recognised as a source of law . It differs from the Sunni qiyas in that it does not simply extend existing laws on a test of factual resemblance: it is necessary to formulate a general principle that can be rationally supported . </Li> </Ul> <Li> According to the Akhbari view, the only sources of law are the Quran and the Hadith, and any case not explicitly covered by one of these must be regarded as not having been provided for . </Li> <Li> According to the majority Usuli view, it is legitimate to seek general principles by induction, in order to provide for cases not expressly provided for . This process is known as ijtihad, and the intellect is recognised as a source of law . It differs from the Sunni qiyas in that it does not simply extend existing laws on a test of factual resemblance: it is necessary to formulate a general principle that can be rationally supported . </Li> <P> Javadi Amoli wrote about source of revelation in Shiism: </P>

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