This study is about the role of time and place in Ejtehad (supreme religious competence). There are different views on the influence of time and place on the Shariat decrees. The purpose of this research is to understand the interrelationship of the above two factors along with the views of the supreme religious authorities. Comparing traditional and Javaheri Ejtehad which Imam Khomeini (pbuh) has inherited reveals that the time and place factors have not been recognized the sole reference of Ejtehad. It is noteworthy that the Book and Shariat are interlinked in Shariat decrees and Ejtehad position whereas time and place are directly related to the specific decrees that is to say that through time and place the base of decrees and their specificity âinternally and externally- are highlighted and dynamics. That is why that a decree on a specific subject can change with time negating or emphasizing the previous one. Therefore, time and place on a decree play their roles and not only decree.