An Iranian man cooks potatoes to be given to Muslims arriving for a religious ceremony in Tehran's Grand Bazaar March 10, 2007. Shiite Muslims in Iran began holy rites 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. REUTERS/Morteza Nikoubazl (IRAN)