Development of taqiyyah theory in the Islamic jurisprudence since the period of Shaikh Tusi through Moqaddas Ardabili: divertion from cognitive method to thematic one

One of the prevalent methods of the Shiite jurists toward contradictory traditions has been that they were attributing one of them to taqiyya (precautionary dissimulation). However, the criteria for this attribution have been seriously changed throughout the various periods which one of the most important of them has been the age of Shaikh Tousi in the fifth century; for the first time, his method was widespread and he attributed a numerous narrations to taqiyya. But Shaikh`s methodological doctrine was changed in the later centuries of Islamic jurisprudence and every groups of the imamite jurists carried out its own approach as the nature of what had been presented by shaikh, finally became different while Sheikh` methodology was a mere cognitive but it was diverted onto a irresponsible means. Similarly, because of the interaction between this issue and other juristic and usuli (principles of jurisprudence) problems, these transformations have made the effective roles in some developments of Shiite jurisprudence.
Researching these secrete corners makes clear the cause of some changes. This study will examine this transformation and its effective causes and also its influence on other areas.