ISTANBUL, TURKEY - JUNE 21: Muslims attend the mass prayer at the historical Sultan Ahmed Mosque, known as Blue Mosque, to mark Laylat al-Qadr, holiest of the Muslims' five holy nights during the Muslims' holiest month of Ramadan, in Istanbul, Turkey on June 21, 2017. Laylat al-Qadr, which means "Night of Power" or "Night of Decree" when the first verses of the Muslims' Holy Qur'an were revealed to the Prophet Muhammad. In Islamic belief Laylat al-Qadr is better and valuable than a thousand months. (Photo by Elif Ozturk/Anadolu Agency/Getty Images)
