QIYᾹS ("analogy") is a method of reasoning that entails the extension of a precedent to an essentially similar situation. One of the four principal sources of law among Sunnī Muslims, qiyās was the last to gain...

In Sunni Islamic jurisprudence, qiyas (Arabic قياس) is the process of analogical reasoning from a known injunction (nass) to a new injunction. According to this method, the ruling of the Qur'an and sunnah may be extended to a new problem provided...