As for the Muhammmadiyya, who said that Muhammad Ibn Ali Askari is the Imam and that he is alive and has not died, their assertion is invalid on the basis of our proofs of the Imamate of his brother, Hasan Ibn Ali, the father of the Qaim . Furthermore, Muhammad died in the lifetime of his father and his death was apparent and visible like the death of his father and grandfather. To dispute that would amount to disputing a self-evident reality.