Maqam of Imam al-Mahdi (may Allah hasten his holy reappearance) is located on the left bank of the current Hussayniya River at the northern entrance of Karbala in the area of Bab al-Salamah. It is located 650 m north of the shrine of Imam al-Hussayn (peace be upon him). This place was named after the awaited Imam al-Mahdi (may Allah hasten his holy reappearance), as it is said that he had prayed in this place and then left to perform the Ziyarat of his grandfather Imam al-Hussayn (peace be upon him).
This place is considered to be one of the most important shrines in Karbala for its connection with the Imam al-Mahdi (Allah hasten his holy reappearance), which made it an important place and an important part of the rituals of the Ziyarat of Sha'ban, which is one of the most important Ziyarat of Karbala.
As usual, believers go on the eve of the mid of Sha'ban to the Maqam of Imam al-Mahdi (may Allah hasten his holy reappearance) in the holy city of Karbala, as this day coincides with his auspicious birthday. What is striking during this night, is lighting candles on the banks of the Hussayniya River, giving special spiritual atmosphere.
Children and adults put candles on a piece of wood or the like to float on the surface of the water. Believers are accustomed to do so on this night when they make vows so that their wishes are fulfilled with the blessings of the Imam of the time and order (may Allah hasten his holy reappearance) in his birthday, as it is narrated that is one of the greatest nights for the answer of supplication.