MECCA, SAUDI ARABIA - AUGUST 12: Muslim pilgrims visit the Jabal al-Nour (al-Noor mountain) and Hira Cave during the annual Hajj pilgrimage in Mecca, Saudi Arabia on August 12, 2018. Hira Cave where the Prophet Muhammad is believed to have received the first revelations of the Quran, is a small cave about 3.5 meters long and a little over 1.5 meters wide located at the top of Jabal al-Nour near Mecca, in the Hejaz region of Saudi Arabia. Mustafa Ciftci / Anadolu Agency