The place where ‘Alī ibn Ḥussayn, the son of the Imam Hussayn and 4th Imam, used to pray while imprisoned after the Battle of Kerbala.
At the Battle of Karbala on the day of Ashura, Hussayn ibn Ali and most of his family were killed. Zayn al-Abidin survived because he was too sick to fight, and was bedridden. Afterwards, he was taken prisoner by the Umayyad forces and transported to Damascus where he was made a prisoner of the Caliph, Yazid I. After some years, he was freed, and returned to Medina where he lived a quiet life as a scholar and a teacher.