In order to safeguard the great sanctuary...
In order to safeguard the great sanctuary, Imam Husayn decided to leave Mecca for Kufah just a day before the hajj pilgrimage. When asked the reason for the mysterious departure from Mecca foregoing the pilgrimage which was only the next day, Imam Husayn said that he would perform this year's pilgrimage at Karbala', offering the sacrifice not of any animals, but of his kith and kin and some faithful friends.
He enumerated the names of his kith and kin who would lay down their lives with him in the great sacrifice at Karbala'. The people of Kufah getting tired of the tyrannical and satanic rule of Yazid, had written innumerable letters and sent emissaries to Imam Husayn to come over and give them guidance in faith. Although Imam Husayn knew the ultimate end of the invitations, he as the divinely chosen Imam could not refuse to give the guidance sought for.
When the Holy Imam with his entourage had reached Karbala', his horse mysteriously stopped and would not move any further. Upon this the Holy Imam declared: "This is the land, the land of sufferings and tortures." He alighted from his horse, and ordered his followers to encamp there saying: "Here shall we be martyred and our children be killed. Here shall our tents be burned and our family arrested.
This is the land about which my grandfather the Holy Prophet had foretold, and his prophecy will certainly be fulfilled." On the 7th of Muharram water supply to the Imam's camp was cut and the torture of thirst and hunger started.
The Holy Imam's camp consisted of ladies, innocent children including babies and some male members of the Holy Prophet's family; along with a small band of some faithful friends of Imam Husayn who had chosen to die with the Holy Imam, fighting against the devil for the cause of Allah. The Day of `Ashura (10th of Muharram): At dawn the Imam glanced over the army of Yazid and saw `Umar ibn Sa'd ordering his forces to march towards him.
He gathered his followers and addressed them thus: "Allah has, this day, permitted us to be engaged in a Holy War and He shall reward us for our martyrdom. So prepare yourselves to fight against the enemies of Islam with patience and resistance. O sons of the noble and self-respecting persons, be patient! Death is nothing but a bridge which you must cross after facing trials and tribulations so as to reach Heaven and its joys.