Egyptian Sufi Muslims touch the tomb of Sayeda Zainab for blessings inside Al-Maqam Al-Zainaby mosque during a celebration of the birth anniversary of Sayeda Zainab, who is the granddaughter of Prophet Muhammad, in Cairo, Egypt, June 5, 2013. (Xinhua/Amru Salahuddien)

Egyptian Sufi Muslims play Sufi music and perform Sufi dancing during a celebration of the birth anniversary of Sayeda Zainab, who is the granddaughter of Prophet Muhammad, in Cairo, Egypt, June 5, 2013. (Xinhua/Amru Salahuddien)

Egyptians perform Sufi dancing during a celebration of the birth anniversary of Sayeda Zainab, who is the granddaughter of Prophet Muhammad, in Cairo, Egypt, June 5, 2013. (Xinhua/Amru Salahuddien)