In the historical process, the relationship between law and ethic has been examined in various aspects and different approaches have been put forward and the targeted social ethics has been tried to be formed. Considering the mutual interaction of these two disciplines, the provisions have been given a rich quality with the steps to be followed, thus the formation of a ethic-oriented law is aimed. Beneficial issues have been paved and harmful ones have been prevented and the law-ethic balance has been established. Thus, doing what is morally beneficial for society has been encouraged and various methods have been developed to prevent possible harm. If the determining principles such as “nass” were not determined in Islamic law, other control mechanisms were established to ensure this. Thus, according to the consequences of taking social norms into account, necessary measures were taken and provisions were formed. In matters not determined by nass, the benefit-harm balance was taken as a basis and the nature of the provision was determined according to the result. In this process, due to the consequences that will occur in the next stage after the execution of a legitimate deed, that deed could be taken out of the legitimacy limit. Thus, taking into account the consequences they would cause, prohibitive provisions could be introduced for permissible and legitimate words and actions. In this way, solutions were produced for social problems by introducing regulations in terms of public order and benefit. Ethical degeneration was prevented with sedd-i zeria, which is one of the evidences determining this, and thus it was possible for the law to perform an important function in the formation of social ethics. In our study, the scope of sedd-i zeria will be discussed theoretically in the context of law-ethic relationship, the issues on which it is applied in furu fiqh will be examined in terms of practice and the role of shari evidence in this issue will be tried to be determined.