After the plunder and massacre at Karbala, the Ahle Bayt (a.s.) of the Prophet (s.a.) were subjected to harrowing tribulations by Yazid’s forces on their way to Shaam (Syria). Indeed these afflictions surpassed those meted out at Karbala in their intensity as well as their hostility. It left the members of Imam Hussain (a.s.)’s household completely scarred for the rest of their lives.
Imam Zayn al-`Abideen [a] used to pray one thousand units of prayer in a day and night. He cried over his father al-Husayn for twenty years. He did not place food before him except that he would cry.
One day, his servant asked him, "O son of the Messenger of Allah! When will you stop grieving?"