WARNING: Contains content some viewers may find disturbing. Ashura commemorates the Prophet Mohammad's grandson's death is considered by Shi'a Muslims to vanquish their sins
This is the brutal moment a child's forehead is cut as part of a religious tradition.
The Shi'a Muslim boy was slashed in the run-up to Ashura in Mumbai, India, and is considered by Shi'a Muslims to vanquish their sins.
Ashura commemorates the death of the Prophet Mohammad's grandson Husayn ibn Ali.
The Day of Ashura, which takes place on the tenth day of the Islamic calendar, has become a national holiday in many Muslim countries, involving most ethnic and religious communities in painful rituals using knives and chains.
Husayn ibn Ali, also known as Imam Hussain, died during the Battle of Karbala 1,300 years ago.
Shi'as across the many Middle Eastern countries are often covered in blood during the ceremonies as Muslims of all ages carry knives and slash each other.
This year's event was marred by a Islamic State (ISIS) bombings on Shi'a pilgrims in Iraq, which left 35 people dead, including two soldiers, and 11 wounded.
