Whenever the martyrs of Karbala are remembered
The world cries and sheds tears of blood
O Husayn! O Husayn!
- Nusrat Fateh Ali Khan
On the Day of Ashura (tenth day of Muharram) Shi’a Muslim commemorate the martyrdom of Husayn ibn Ali, the 3rd Shi'a Imam and grandson of Muhhamad, and some of his family members at the Battle of Karbala.