In this photo taken Tuesday, May 12, 2015, an Egyptian Sufi Muslim waves a green flag with Arabic that reads, “There is no God but Allah and Muhammad is his messenger” as he welcomes visitors to the Sayyeda Zeinab mosque. Egyptian Muslims celebrate the religious festival, or Moulid, which commemorates the birth of the Muslim Prophet Muhammad's granddaughter, Sayyeda Zeinab, outside the mosque and shrine named for her, in Cairo, Egypt. (Photo by Amr Nabil/AP Photo)
