Ali ibn Hussain al-Zain -ul-'Abidein The Fourth Imam

Honour name(LAQAB) Mother name No.of children Date of Birth Place of  Birth
Zain-ul-Abidein Hazrat Sher Bano Binte Yazd Jard 11 Sons 15th Jamadi-Awal ,38th Hijri Madina
Date of wafat/shahadat Duration of   Life Place of Burial Name of Massom
25th Muharram 95 Hijri 57 Hijri Jannat-ul Baqee(Madina) Ali

Imam Sajjad (Ali ibn Hussain entitled Zain ul-'abidein and Sajjad) was the son of the third Imam
He was the only son of Imam Hussain to survive, for his other three brothers Ali Akber, Ja'far and Ali Asghar (or 'Abdallah) who was a suckling baby were martyred during the event of Kerbala

The Imam had also accompanied his father on the journey that terminated fatally in Karbala, but because of severe illness and the inability to carry arms or participate in fighting he was prevented from taking part in the holy war and being martyred
Among the works of the fourth Imam is a book called Sahifa al-Sajjadiyah. It consists of fifty-seven prayers concerning the most sublime Divine sciences and is known as "The Psalm of the Household of the Prophet (sawas)."
The fourth Imam died (according to some Shi'ite traditions poisoned by Walid ibn 'Abd al-Malik through the instigation of the Umayyad caliph Hisham) in 95/712 after thirty-five years of Imamate.

                                                      Refferences: SHI'A by Allamah Sayyid Muhammad Husayn Tabatabai,
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