Muawiya used Islam.
Muawiya used Islam. Yazid was determined to destroy Islam. As soon as he became Khalifa, Yazid sent a letter to his Governor of Madina, Waleed bin Utba, asking him to get Bai'at from Imam Husayn. Bai'at means an oath of allegiance. Yazid felt that if Imam Husayn declared bai'at to him, no one could then accuse him of having taken over khilafat illegally. Waleed received the letter on 27th Rajab. He sent a message to Imam Husayn to go to the palace that evening.
Accompanied by his brothers, sons and nephews Imam Husayn went to the palace. Imam asked all who had come with him to wait outside while he went in alone. Waleed showed Imam no respect and rather arrogantly asked him to declare bai'at to Yazid. Imam replied that the question of Bai'at was a serious matter and should be discussed openly in day light. Imam came out looking sad. He asked all his companions to go home and prepare for a journey at dawn the following morning.
He requested Hazrat Abbas to take charge of the preparations adding, “Abbas, Faatimah Sughra is ill. She will not be able to stand a long journey. She will have to stay in Madina.” Imam began to walk slowly towards the mosque, deep in thought. Imam Husayn could not even consider bai'at to Yazid. It was not a matter of his pride or his right to khilafat. Bai'at to Yazid would mean Imam's approval of Yazid's way of life and this would decidedly lead to a total destruction of Islam.
It was Imam's duty to uphold and defend Islam. If he stayed on in Madina while he refused to give bai'at, then Yazid would surely attack him in Madina. Imam would have the advantage of having all his own relatives as well as the people of Madina fighting on his side. But this would have two serious disadvantages. Firstly, it would put all his friends in Madina in danger. Secondly, although Yazid might be defeated, history would look upon the battle as a battle of khilafat.
Even if Yazid were to be killed, the injustice, the oppression and the immoral way of life which Muawiya and Yazid had promoted would not die. Imam Husayn's mission was to destroy the evil that these two men had let lose. For this he needed to awaken the spirit of Islam amongst the Muslims. Imam arrived at the mosque. He lit a candle and walked towards the grave of the Holy Prophet. The thought that this might be the last time he would see the grave filled him with sorrow.
He sat by the grave, put his cheek on it and began to sob. “I have come to say good-bye to you O grand-father.