Shi'ite pilgrims pray at the Imam Hussein shrine during the Arbain religious event in the holy city of Kerbala, 110 km (70 miles) south of Baghdad, March 9, 2007. More than a million Shi'ite Muslim pilgrims poured into Iraq 's holy city of Kerbala to mark Arbain, the end of a 40-day mourning period since Ashura, which marks the death of Prophet Mohammad's grandson Imam Hussein in 680AD. Picture taken March 9, 2007. REUTERS/Thaier al-Sudani (IRAQ)