Some of the scholars who mention this are as follows...
Some of the scholars who mention this are as follows: A – Imam Muhammad Abduh: Under the discussion of just and unjust rule according to Islam, Imam Muhammad Abduh has alluded to the uprising of the Imam against Yazid’s regime and has considered the Imam’s uprising as a religious duty.
And he says: “If a just rulership is established in the world that applies the law of Shariah and at the same time there is another regime that does not apply the laws of Shariah, it is incumbent upon all Muslims to support the former and abandon the latter…and in this way was the uprising of Imam Husain (‘a) the Prophet’s grandson against the leaders of injustice and oppression.
Who had forcibly usurped the affairs of Muslims under the kingship of Yazid Ibn Muawiyah, may Allah degrade him and his supporters also, that is the Caramatees and Nawasib.” [1] B – Muhammad Abdul Baqi: Ustad Muhammad Abdul Baqi Sarwar says regarding religious and social duty that it became obligatory for the Imam to take a stand against Yazid’s regime.
He says: “If Husain (‘a) had given allegiance to Yazid, the [1] Tafsir al-Manar 12/183 transgressor and profligate, who made wine and fornication lawful, degraded the status of caliphate by sitting with singers and women, arranged drinking parties in official places, decorated dogs and monkeys with gold ornaments while hundreds of thousands of Muslims remained starving and deprived, it would have implied the legalization of all these things.
If Husain (‘a) had pledged allegiance to Yazid while he was a successor of the Messenger of Allah (s), this verdict would have decreed all those things lawful in the view of people and Husain’s silence would also have implied his approval of these sinful activities.
His silence against these things would have amounted to sin and crime according to Islamic law… The status that Husain was having during the time of Yazid not only in the Arabian Peninsula, but in all the Islamic lands, his position among the Muslims and his proximity to the Prophet of the Lord of the worlds and on the basis of this after the passing away of the greatest personality of Muslims, from the aspect of knowledge, piety, ancestry and circumstances he was the foremost person of the nation.
Because he was having the responsibility of defending the Islamic heritage. On the basis of this he considered it his duty when he was called to help in order to stop the evils.