This article discusses an academic discourse on the origin of Islamic Law by describing third school between two schools existing in this controversial field. By descriptive and comparative method, this article tries to describe how Yasin Dutton views on the beginning of Islamic Law’s construction, and then how he digs his hypothesis against two dominant schools involved in the discussion of the date of Islamic Law birth. Dutton finds that if the Qur’an is the first written formulation of Islam in general, al-Muwatta of Malik is arguably the first written formulation of the Islam-in-practice’ that becomes Islamic law. This way is missing in the first and second school attention. He considers the methods used by Malik in the Muwatta‘ to der...