It is related in Manaqib of Ibn Shahr Ashob...

It is related in Manaqib of Ibn Shahr Ashob, that Ahmad bin Hambal says that the reason for Imam Zainul Abedeen (a.s.) becoming ill in Karbala was that he had worn a long armor, and he clipped the extra part of it with his bare hands and tore it (and thus developed fever). Shaikh Mufeed relates that the accursed Umar bin Sa’ad came in facing the tents and the women started weeping and wailing in front of him.

He turned towards his accomplices and said, “None should enter the tents of the women-folk and none should disturb this ailing infant”. The women-folk desired from him that whatever was looted from them be returned back so that they may cover themselves. He said, “Whatever one has looted off the belongings of these women should return it back to them”. By Allah! None returned anything.

Then he appointed some guards upon the tents of the ladies and of the ailing Imam and said, “Guard them, none should enter therein nor should ruin them”.

Saying this he returned to his tent and called out in the midst of his associates, “Who will volunteer to gallop horses upon Husayn?” Tabari says that Sinan bin Anas came to Umar bin Sa’ad and stood at the door of his tent and called out, “Fill my stirrup with rewards for I have killed the King whose door was guarded, I have killed the one who was the best with regard to his father and mother, and whenever ancestry was discussed he possessed the best ancestry”.[^1] Umar bin Sa’ad said, “You are insane and shall never come to your senses.

Bring him to me”. He was brought to him and Umar beat his hand with the cane and said, “O insane one! You have uttered that, which if heard by Ibn Ziyad, he will blow your head off”. Umar bin Sa’ad arrested Uqbah bin Sam’an, the servant and retainer of Rabab (a.s.), the wife of Imam Husayn (a.s.), and asked him, “Who are you?” He replied, “I am a retainer”. Then he was released, and we have related regarding him, along with Marqa’ bin Samamah, in the preceding chapter.

It is related, that then Umar bin Sa’ad called out in a loud voice among his accomplices, “Who among you will volunteer to gallop the horses upon the body of Husayn?” Ten men among them volunteered to do so. Among them was Ishaq bin Haywah Hazramee, who had looted the shirt of Imam Husayn (a.s.), and was later bed-ridden with leprosy, and Ahbash bin Marsad Hazramee. They proceeded further and galloped their horses until they had crushed the back and chest of Imam Husayn (a.s.).