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Shiavault - a Vault of Shia Islamic Books Brief History of Fourteen Infallibles The Fourteenth Infallible The Twelfth Imam Muhammad Al-Mahdi (Peace be on him) Name: Muhammad. Title: al-Mahdi, al-Qa'im, al-Hujjah, al-Gha'ib, Sahibu'z-Zaman, Sahibu 'l-Amr. Agnomen: Abu 'l-Qasim. Father's name: al-Hasan al-`Askari. Mother's name: Narjis. Birth: In Samarra', on Friday, 15th Sha'ban 255 AH. He is still living and will appear before the end of the world. Minor Occultation: 8th Rabi`u1-awwal 260 AH.
Major Occultation: 10th Shawwal 329 AH. There existed a good deal of harmony and uniformity between the aspects pertaining to the births of , the last Apostle of Allah and Imam al-Mahdi, the last Apostolic Imam. Just as the coming of the Holy Prophet was prophesied well in advance by the preceding prophets, similarly the impending news of the gracious birth of Imam al-Mahdi was foretold by the Holy Prophet.
Innumerable traditions in this context, quoted right from the Holy Prophet, from the glowing contents of many books of Masanid, Sihah and Akhbar, and of Shiite scholars (ulama') existed. Many Sunni scholars have accumulated these traditions in complete volumes also, e.g.: al-Bayan fi akhbar Sahibi'z-Zaman by al-Hafiz Muhammad ibn Yusuf ash-Shafi'i and Dhikriyyatu'l-Mahdi by al-Hafiz Abu Nu'aym al-Isfahani as well as as-Sahih of Abu Dawud and as-Sunan of Ibn Majah.
All of the above books record the traditions bearing evidence of the coming of this Holy Imam. The promised Mahdi, who is usually mentioned by his title of Imamu'l-`Asr (the Imam of the Period) and Sahibu'z-Zaman (the Lord of the Age), is the son of the Eleventh Imam. His name is the same as that of the Holy Prophet. He was born in Samarra' in 255/869 and until 260/874 when his father was martyred, lived under his father's care and tutelage.
He was hidden from public view and only a few of the elite among the Shi'ah were able to meet him. After the martyrdom of his father he became Imam and by Divine Command went into occultation (ghaybah). Thereafter, he appeared only to his deputies (na'ib) and even then only in exceptional circumstances. The Imam chose as a special deputy for a time `Uthman ibn Said al-`Amri, one of the companions of his father and grandfather who was his confident and trusted friend.
Through his deputy the Imam would answer the demands and questions of the Shi'ah. After `Uthman ibn Said, his son Muhammad ibn `Uthman al`Amri was appointed the deputy of the Imam.