Killing ‘Ubayd Allah by means of deceit was not compatible...
Killing ‘Ubayd Allah by means of deceit was not compatible with Muslim’s conduct and personality because he was a man endowed with strong faith and abstinence. He was raised and brought up in the house of Amir al-Mu’minin ‘Ali ibn Abi Talib (as). The responsibilities he was carrying from Imam al-Husayn (as) were to get and secure the people’s allegiance for the Holy Imam (as) and inform him about all that was taking place in Kufah, not killing ‘Ubayd Allah ibn Ziyad.
Therefore, if he had killed ‘Ubayd Allah ibn Ziyad, he would have gone beyond the domain of his duties and beyond his line of responsibilities. Muslim ibn ‘Aqil considered his duty to be the awakening of the consciousness of the people. If ‘Ubayd Allah ibn Ziyad and the likes of him were assassinated in the absence of social consciousness arising from awareness among the people, the result would be that the people would bring to power someone similar or even worse than Ibn Ziyad.
The people had to become aware and informed about the corruption and perversion of the caliph himself. This social awareness and awakening could not be attained by assassinating one man. This is why there is no historical document confirming that Muslim ibn ‘Aqil had concurred with Sharik’s plan of assassinating ‘Ubayd Allah ibn Ziyad. It is possible that Muslim ibn ‘Aqil was thinking about this plan, but did not have a definite intention of executing it.
When we deeply reflect upon this event, we come to the conclusion that Hani ibn ‘Urwah had granted guarantees of safety to ‘Ubayd Allah ibn Ziyad. The reason is that when Ibn Ziyad asked Hani to give him permission to come and visit Sharik, Hani ibn ‘Urwah granted him the permission. This in itself is a kind of verbal guarantee which Hani gave to ‘Ubayd Allah ibn Ziyad.
In these circumstances, Islam binds a man to respect the rules of civility by stipulating that he should not kill anyone who has been granted guarantees of safety, even if that person is a matrix of corruption and a source of perversion like Ibn Ziyad especially when this person is visiting another person’s house, not yours, and the host’s wife is not pleased with such an action and is pleading with you to quit the plan; particularly when she insists that if you seriously intend to carry out the assassination, you should do it elsewhere, and not in her house.
‘Ubayd Allah ibn Ziyad had come with bodyguards.