Imam Hasan ibn Ali 'Askari, the son of the tenth Imam, was born in 232/845 and according to some Shi'ite sources was
poioned and killed in 260/872 through the instigation of the Abbasid caliph Mu'tamid. The eleventh Imam gained the Imamate,
after the death of his noble father, through Divine Command and through the decree of the previous Imams.

Honour name(LAQAB) Mother name No.of children Date of Birth Place of  Birth
ASKARI Hazrat Hadisa Khatoon Hazrat SAHIB-UL-ASR (A.S) 10th Rabi-ul-Sani 232 Hijri
Date of wafat/shahadat Duration of   Life Place of BURIAL Name of Massom
8th Rabi-ul-Awal  260 Hijri 28 Years,2 months Sarman-raye (IRAQ) HASSAN

During the seven years of his Imamate, due to untold restrictions placed upon him by the caliphate, he lived in hiding and
dissimulation (taqiyah). He did not have any social contact with even the common people among the Shi'ite population. Only the
elite of the Shi'ah were able to see him. Even so, he spent most of his time in prison.

 The reappearance  of the  Imam Mehdi(A.S) had been foretold in authenticated hadiths of the Prophet (sawas) in both Sunni
/Shia sources. For this reason the eleventh Imam, more than other Imams, was kept under close watch by the caliphate. The
caliph of the time had decided definitely to put an end to the Imamate in The Followers of Ahlu Bayt through every possible
means and to close the door to the Imamate once and for all.
Therefore, as soon as the news of the illness of the eleventh Imam reached Mu'tamid. he sent a Physician and a few of his
trusted agents and judges to the house of the Imam to be with him and observe his condition and the situation within his house at
all times. After the death of the Imam, they had the house investigated and all his female slaves examined by the midwife. For
two years the secret agents of the caliph searched for the successor of the Imam until they lost all hope.
The eleventh Imam was buried in his house in Samarrah next to his noble father. Here it should be remembered that during their
lifetimes the Imams trained many hundreds of scholars of religion and hadith, and it is these scholars who have transmitted to us
information about the Imams. In order not to prolong the matter, the list of their names and works and their biographies have not
been included here.


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                                                          Refferences: SHI'A by Allamah Sayyid Muhammad Husayn Tabatabai,
                                                                                  Shahid Juma Concept of Massiah in Islam