The 9th of Rabi al-Awwal is a significant day in Islamic history, and there are several events associated with it. Here are some of the events that are believed to have occurred on this day:

• Birth of Prophet Muhammad (pbuh): Some historians believe that the Prophet Muhammad (pbuh) was born on the 9th of Rabi al-Awwal.

• Eid-e-Zahra: This day is also known as Eid-e-Zahra, which means the festival of Fatima al-Zahra (sa). It was on this day that joy and happiness were restored in the family of Ahlul Bayt (as) after the tragedy of Karbala. From the tragedy of Karbala in 61 AH till this day, the family members of the Prophet Muhammad (pbuh) had continuously mourned and grieved the martyrdom of Imam Hussain (as) .

• Imamate of Imam Mahdi (a): According to some reports, the Imamate of Imam Mahdi (a) began on the 9th of Rabi al-Awwal.

• Death of Umar ibn Saad: Umar ibn Saad, who killed Imam Hussain (as) in the Battle of Karbala, was killed by Al-Mukhtars army on this day.

• Eid: This day is considered as Eid, and it is the greatest Eid for the followers of Ahlul Bayt (as) .

Overall, the 9th of Rabi al-Awwal is a day of joy and happiness for the followers of Ahlul Bayt (as) and marks the end of the mourning period after the events of Karbala.