A Study and Critique of the Traditions Claiming the Appearance of Imam Mahdi (A.S) in the years of 70 and 140 AH

“Realization of the rule of Ahl al-Bayt (A.S)” and living in its shadow is the most important aspirations of the Shiite. Therefore, the Ahl al-Bayt were asked about it. Most of narrations which are about this issue report that no specific time has been set. However, some narrations have mentioned the two times of 70 and 140 AH for this important issue, the most important of which is the narration mentioned in “Al-Kafi”. The present study analyzes and investigates these narrations, and while stating the authenticity of the narrations in question, and counting the narrations of its family, it makes it clear that the designated years are neither a mere expression of openness in life nor for statement of time for the rule of Imam Mahdi (A.S); rather it mentioned a time for the realization of a rule of Ahl al-Bayt by one of the Imams (A.S) supposed to be realized in these two years; however, due to the obstacles that arose, its time was delayed; so that after that, no other time has been set for this important issue.