When Hazrat Imam Husain (a.s.) reached a spot called, ‘Hājiz’ he wrote a letter to Muslim Ibn Aqīl and the Shias of Kufa. He wrote:
“From Husain Ibn ‘Ali (a.s.) to his Muslim and Mu’min brothers. Peace be upon you all. Praise be to Allah besides Him there is no deity. I have received Muslim’s letter. He has informed me of the glad news that you all are united to support me and prepared to fight for my right. I pray to Allah for your favourable consequences. May He reward you for this stand of yours. I have left Mecca on Tuesday the eighth of Zilhajj and started moving towards you. When my messenger reaches you, you must become serious and concerned in your mission. I shall come to you within a few days, Inshāllah. Peace be upon you and the Divine Mercy.”
Imam Husain (a.s.) gave this letter to Qays Ibn Musher Saidawi who set out immediately and soon reached the outskirts of Kufa. An officer of Ibn Ziyad, by the name of Hasīn Ibn Tamim tried to arrest him there. He at once tore up the letter of Imam Husain (a.s.). He was then taken to Ibn Ziyad. When Ibn Ziyad told him to surrender the letter he said, “I have torn it into pieces.”
“Why?” asked Ibn Ziyad.
“So that you may not come to know what was written in it.”
“To whom was it addressed?”
“To some people I am not familiar with.”
Ibn Ziyad ordered, “If you do not reveal the name, you shall have to mount the pulpit and invoke curse upon the liars.” [Ibn Ziyad was actually referring to Imam Husain (a.s.).]
Qays Ibn Musher went to the pulpit and announced, “O people! Husain Ibn ‘Ali is the best creature of Allah (S.w.T.), and the son of Fatemah (S) the daughter of the Holy Prophet (S). I am his messenger. I have left him at a place called ‘Hājiz’. I have come to you so that you may respond to his call and support him wholeheartedly.”
Then Qays invoked curse upon Ibn Ziyad and his father. He then showered praises upon Amir ul-Mu’minīn Hazrat ‘Ali (a.s.).
Ibn Ziyad ordered that Qays be taken to the wall of the palace and then thrown down. When Qays was thrown from such a height, his bones shattered but he was alive when Abdul Malik Ibn Amir beheaded him.
When Imam Husain (a.s.) learnt of Qays’ murder, his eyes were filled with tears. He recited the following ayat of the Qur’an:
“Of the believers are men who are true to the covenant which they made with Allah: so of them is he who accomplished his vow, and of them is he who yet waits, and they have not changed in the least.”(Surah Ahzāb 33:23)