Abd Allah ibn Hasan al-Mujtaba

Abd Allah ibn Hasan, Peace Be Upon Him, was a son of Imam Hasan ibn Ali and therefore a grandson of Imam Ali and Lady Fatima and a nephew of Imam Husayn. He must be distinguished from later men named Abd Allah ibn Hasan in the Hasanid family, and the Karbala sources themselves may preserve more than one son of Hasan under the name Abd Allah or under the related kunya Abu Bakr. This naming problem is important because later marriage and combat reports may not all concern the same individual.

His exact birth date is not securely preserved. The early narrative describes him as a boy who had not yet reached adolescence, which establishes his youth but not a precise age. The often-repeated age of eleven belongs to later chronological reconstruction and should not be treated as an independently documented birth record. His mother's identity is also reported differently: Maqatil al-Talibiyyin names a daughter of al-Salil ibn Abd Allah al-Bajali, while another transmitted view calls his mother an unnamed umm walad.

On the Day of Ashura, 10 Muharram 61 AH, corresponding to 680 CE, Abd Allah was among the women and younger members of the household while Imam Husayn faced the final assault. The narrative associated with al-Mufid and al-Tabari says that he ran toward his uncle; Lady Zaynab tried to restrain him, but he refused to leave Husayn. When an attacker raised a sword against Husayn, the boy attempted to shield his uncle and the blow cut his arm severely.

The accounts agree on his martyrdom beside or in the embrace of Imam Husayn, but differ over names and sequence. The sword-wielder is called Bahr ibn Ka'b in one transmission and Abjar ibn Ka'b in another. Later Imami accounts say that Harmala ibn Kahil then shot him and caused his death, while Maqatil al-Talibiyyin also preserves a report that an unidentified man from the opposing force killed him. The responsible historical core is therefore his defence of his uncle, the grievous arm wound, and his death during the final phase of Karbala; the identity of the final killer remains variant.

Later genealogical works also connect an Abd Allah ibn Hasan with Sukayna bint al-Husayn and say that he died before the marriage was consummated. Some researchers identify that husband as an older namesake or as the son known by the kunya Abu Bakr, rather than the very young boy described in the final-attack narrative. Because the report cannot be securely assigned to this child martyr, no spouse relationship is recorded in this person profile. His individual grave is not identified in early sources. Karbala tradition remembers him among the Hashimite martyrs buried collectively near the sanctuary of Imam Husayn, which is a communal burial tradition rather than proof of a separately marked grave.