This study came with a statement of one of the most important and deepest sciences of the principles of Islamic jurisprudence, that science, which is the basis of knowledge of evidence of Islamic legislation, and the deduction of rulings from them. The science of the purposes of Sharia is one of the most important axes of this great science, it is the researcher for the will of the street and its purposes.
This study aims to bring the reader and researcher in the legal sciences to a great truth in which ambiguity is manifested and minds are opened to what the Sharia and the wise legislator want from the people, by realizing the purposes and intentions, and not standing at the apparent texts, but to extract the intended meanings and desired goals from the depths of the texts or even by analogy with those texts without conflict with the principles of Sharia nor with its overall evidence.
This study illustrates the link between the science of legal purposes and its relationship to governance, goals, outcomes, major jurisprudential rules and the theory of interest in Islamic law, which is one of the most important axes on which the idea of Islamic legislation is based, through practical employment and applied examples from the Qur'an, Sunnah and other evidence.