People pray at the shrine of Prophet Mohammed's grandson Hussein ibn Ali at the Al-Hussein mosque, as they celebrate "Moulid Al-Hussein" the birthday of Prophet Mohammad's grandson Hussein in Cairo, February 25, 2014. (Photo: Reuters)

People pray at the shrine of Prophet Mohammed's grandson Hussein ibn Ali at the Al-Hussein mosque, as they celebrate "Moulid Al-Hussein" the birthday of Prophet Mohammad's grandson Hussein in Cairo, February 25, 2014 (Photo: Reuters)

People pray at the shrine of Prophet Mohammed's grandson Hussein ibn Ali at the Al-Hussein mosque, as they celebrate "Moulid Al-Hussein" the birthday of Prophet Mohammad's grandson Hussein in Cairo, February 25, 2014 (Photo: Reuters)

Worshippers attend the El Ishaa prayers at the Al-Hussein mosque, during celebration day of "Moulid Al-Hussein" the birthday of Prophet Mohammad's grandson Hussein in Cairo, February 25, 2014 (Photo: Reuters)

A boy applies perfume on the hands of worshippers during El Ishaa prayers at the Al-Hussein mosque, during celebration day of "Moulid Al-Hussein" the birthday of Prophet Mohammad's grandson Hussein in Cairo, February 25, 2014 (Photo: Reuters)

Worshippers pray El Ishaa prayers at the Al-Hussein mosque, during celebration day of "Moulid Al-Hussein" the birthday of Prophet Mohammad's grandson Hussein in Cairo, February 25, 2014 (Photo: Reuters)

Worshippers read the Koran at the Al-Hussein mosque, during celebration day of "Moulid Al-Hussein" the birthday of Prophet Mohammad's grandson Hussein in Cairo, February 25, 2014 (Photo: Reuters)

A woman plays with her child in front of the Al-Hussein mosque, during celebration day of "Moulid Al-Hussein" the birthday of Prophet Mohammad's grandson Hussein in Cairo, February 25, 2014 (Photo: Reuters)

Worshippers surround Al-Hussein mosque, near banner whcih support Egypt's army chief Field Marshal Abdel Fattah El-Sisi for the presidency, as they celebrate "Moulid Al-Hussein" the birthday of Prophet Mohammad's grandson Hussein in Cairo, February 25, 2014 (Photo: Reuters)