After the companions of Imam Husain (a.s) were all martyred, it was the turn of his relatives; the remoter relatives facing the enemy before the nearer ones. Thus, the first to go, one by one, were the six brothers, three nephews and two sons of Muslim bin Aqeel (a.s), cousin and deputy of Imam Husain (a.s) who was martyred in Kufa. Then, followed Own and Muhammad the two sons of Abdullah bin Ja’far and Imam Husain’s sister Zainab (a.s). Next, came the turn of the sons of Imam Hasan (a.s). Al-Qasim was in his teens. In the single combat, he prevailed over several renowned warriors including the renowned Syrian, al-Arzaq and his brothers. When the enemy made a general attack with all his might, Qasim fought with great valour and the ferocity of his attack scattered the enemy whom he pursued right into the midst of Yazid’s army. Sa’d bin Urwa bin Nufeil, a vile soldier of Yazid, hid himself and when Qasim passed in pursuit of the fleeing soldiers, attacked from behind so ferociously that Qasim fell from his horse. The enemy, seeing Qasim lying on the ground, regrouped and attacked him. Hearing Qasim’s cries, Abbas, Ali al-Akbar and Imam |
Husain (a.s) rushed to rescue him, but in the melee, the hoofs of horses of the retreating forces of Yazid trampled him (Qasim) badly. |
source : http://www.maaref-foundation.com