The belief in Mahdi and His appearance is considered as a major part of the system of Islamic religion within the assumed Islamic principles and one of the serious problems with an ancient history We can acknowledge that all in agreement with it. Islamic scientists as well as many traditions that their widely - transmission are accepted by most of thinkers refers to this subject, but meanwhile few of them perhaps that can be counted with fingers have questioned and denied it. Two of them are Mohammad Rashid Reza and Ahmad Amin Mesri. Putting forward their words and reasons this writing gives some evaluation and criticisms in the case.
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