Comparative Research on Tajarri (Temerity to Commit Crime) in Islamic Methodology of Feqh and Concept of Dangerousness in Criminology

This article talks about tajarri and it`s criminal types comparatively with concept of dangerousness in criminology. First, it states the meanings of main words and the words that related to them. While Iran Criminal law after Islamic revolution, rejected any penal reaction against tajarri and its types, like inchoate offences, as in attempts or impossible crimes, so this research proves the necessity of any logical reaction against doer of tajarri which are dangerous for society, by using the comments of scientists in Feqh, methodology and criminology. Although the legislature has criminalized some conducts like preparation conducts or threat to commit a crime, that are less dangerous for society, but refused to criminalize any type of tajarri, however we don`t recommend the legislature to criminalize them. Finally the recommendation is to accept the dangerousness concept and to foresee the appropriate safe guarding measures without punishment but with observance of legal principle.