Rajab 28th - Start of Journey of Imam Hussain(a.s.), his family members and companions towards Iraq, (via Makkah). After hatching the conspiracy and achieving ultimate martyrdom of Imam Hasan(a.s.), Maria started campaigning openly for the succession of his son Yazid to the office of Caliphate. Until that time he had always planned in secret about this intention. To materialize his plans, he started his campaign among his most trusted people in Syria where he had established his headquarters. Later on, his missionaries took the message to other parts of the Islamic world and with the help of lot of money and bribery he got support for the caliphate of Yazid from a number of important Islamic cities.

After his death in Rajab of the 60th Hijrah, Yazid sat on his throne and started the campaign of getting Ba'yat of all Muslims so that they would accept him as the Caliph. The materialistic personalities of that time came forward and accepted his caliphate. Among them were mostly the people who were known for their enmity towards the Ahl-e-Bait(a.s.) of our Prophet Mohammad(saww). The other group was of the people who were either coerced by force or treachery or their loyalties were bought through material offers.

When the campaign crossed the borders of Syria, instructions were sent to the Governor of Madina - Walid ibn-e-Aqua ibn-e-Abu Sufyan - as well to get the ba'yat of Imam Hussain(a.s.). According to some historians, Yazid also mentioned that if Imam Hussain(a.s.) declines his ba'yat then Walid should kill him and send his head to Syria. Walid invited the Imam(a.s.) to his court and gave him the orders of Yazid and demanded his ba'yat. Imam(a.s.) replied "A person like me would never accept the ba'yat of a person like Yazid". In this statement, Imam(a.s.) gave a clear guideline to all believers.

One of the advisors of Walid named Marwan bin Hakm incited Walid on getting Imam(a.s.) killed right there but Imam(a.s.) was joined by a few of his followers from Bani Hashim under the leadership of Hazrat Abbas(a.s.) and returned safely from the court. The political developments made it very clear that Yazid was going all out to either obtain the ba'yat of Imam Hussain(a.s.) or to get him killed. Imam(a.s.) had the sanctity of Madina as well as the salvation of the religion of Islam in his mind, therefore, he decided to leave Madina and go towards Iraq. He asked for the preparation of Caravan of his selected family members and his trusted friends and set off for this long journey on the 28th of Rajab.