While imprisonment (Habs) is the most common criminal response in the criminal law system of the Islamic Republic, its recognition and legitimacy remain contested since the victory of the Islamic Revolution. The authority of imprisonment (Habs) as ta'zir and its limits has been debated by Imami scholars. This is a point of view and is open to review. The first mission of this article is to analyze the opinions of jurists regarding the legitimacy and limits of the application of this punishment. A selected view on the illegitimacy of the prison sentence (Habs) was selected after presenting this subject. As a result of proving this assertion, a new theory will dominate the penal system in the country, and that theory is that punishments should be minimally incarcerated. According to this theory, the legislator should determine this punishment in a confined manner and in cases of necessity. It is not possible to extend it to a wide range of crimes. In this article, the argumentative approach will be to discuss both the lexical meaning of the word imprisonment (Habs) and the Qur'anic meaning - as well as to examine the central emphasis of fundamentalism in the interpretation of texts and the philosophy of punishment legislation. Developments in the criminal law of the Islamic Republic in the field of the use of prison sentences have also been discussed in the present study.