It is on this basis that a commemoration is organized or...

It is on this basis that a commemoration is organized or charity is given on behalf of the deceased on the fortieth day of his/her demise.

The Arabic term Arbaeen is technically used among the Shiites to denote the fortieth day of the Day of Ashura, the day the beloved grandson of (peace be upon him and his Household); Imam Husain (peace be upon him) was martyred along with 72 members of his family (including an infant) and loyal at Karbala on Muharram 10, 61 AH [7] (correspondent to October 10, 680).

This occasion commemorates the unwavering stand of Imam Husain (AS) and his companions against tyranny and oppression, a legacy that has continued to inspire generations of believers. The forty days after Ashura symbolize not only a period of mourning but also a revival of Islamic values through remembrance and reflection.

The origin of the fortieth day [Arbaeen] visitation of Imam Husain, peace be upon him, can be traced back to 61 Hijrah, when a notable companion of the Prophet, Jābir ibn Abdullah Anṣārī arrived in Karbala from Medina on the twentieth of Ṣafar and found the graves of Imam Husain (peace be upon him) and his companions on the plains of Karbala. He was considered to be the first person to visit the place after the tragic incident on the Day of Ashura, 61 Hijrah [8] .

From that moment onward, the Arbaeen of Imam Husain became a cornerstone of remembrance in the Shia tradition. It was not merely a ritual mourning but an act of preserving the message of Karbala—resistance against injustice, loyalty to divine truth, and the ultimate sacrifice for righteousness. The Arbaeen of Imam Husain (AS) thus laid the foundation for a movement that continued through generations, inspiring countless acts of devotion and solidarity with the cause of Imam Husain (AS).

Throughout history, despite periods of persecution and political suppression, the commemoration of the 40th day of Imam Husain (AS) persisted. It gradually evolved from a small gathering into a worldwide phenomenon, drawing millions of pilgrims to the holy city of Karbala . Today, the Arbaeen of Imam Husain (AS) not only connects the faithful with the martyr of Karbala but also reinforces the ongoing relevance of his struggle in contemporary times.

Today, the 40th day of Imam Husain (AS) is marked by the largest peaceful human gathering in the world, as millions of people walk toward Karbala in a powerful display of love, loyalty, and solidarity.