Arbaeen is a Shia Muslim religious observance that occurs 40 days after the Day of Ashura. It commemorates the martyrdom of Hussein bin Ali, the grandson of the Prophet Muhammad which falls on the 20th day of the month of Safar. Imam Husayn and 72 companions were martyred in the Battle of Karbala in the year 61 AH (680 CE), killed by Yazid I's army. Forty days is the usual length of the time of mourning in many Islamic cultures. Arba'een is one of the largest pilgrimage gatherings on Earth, in which over 15 million people go to the city of Karbala in Iraq.
... Payvand News - 12/27/13 ... --