Checking why Imami Shiites believe in Toqiyyat(handwritten) in minor absence

With the beginning of Sughra's absence and serious limitations in the communication between Imam Mahdi and the Shiites, correspondence was the most dominant way of seeking advice, meeting needs, and obtaining duties in various fields from the Imam. The acceptability and validity of the correspondence and acting on its content required the confidence of the Shiites in the correspondence. The factors and roots of people's confidence in correspondences were relying on clear signs and clear evidences that the passage of time and distance from them made the audience face questions. It seems that various factors such as: familiarity of scientists with the line of correspondence; Submission of many correspondences by primary and secondary attorneys; Confirmation and acknowledgment of elders regarding correspondence; Possession of correspondence with special knowledge and their realization; Non-contradiction of the content with the text of religion; It has caused the Shiites to believe in the correspondences and confirm that they were issued by Imam Mahdi (peace be upon him)