A Muslim pilgrim looks down on Mecca from the top of Noor mountainPhotograph: Mustafa Ozer/AFP/Getty ImagesA pilgrim walks with his son along the road in the Mina valley Photograph: Mustafa Ozer/AFP/Getty ImagesA Muslim pilgrim reads the Koran on the Mount of Mercy on the plains of ArafatPhotograph: Mohammed Salem/ReutersAn ambulance sits amid the thousands of pilgrims praying near the Namira Mosque. Pilgrims flooded on to the Arafat plain from Mecca and Mina before dawn for a key ritual around the site where Muslims believe that Muhammad gave his farewell sermon 1,378 years agoPhotograph: Mustafa Ozer/AFP/Getty ImagesPilgrims pray near the Namira Mosque. Pilgrims spend the day at Arafat in reflection and reading the Qur'an Photograph: Mustafa Ozer/AFP/Getty ImagesFemale pilgrims arrive at the Mina valleyPhotograph: Mustafa Ozer/AFP/Getty ImagesPilgrims look at a map as they arrive at the Mina valley Photograph: Amer Hilabi/AFP/Getty ImagesA Saudi police officer monitors the crowd on the Arafat plain, outside the holy city of MeccaPhotograph: Mohammed Salem/ReutersMuslim pilgrims pray on a rocky hill known as the Mountain of Mercy, on the Arafat plainPhotograph: Hassan Ammar/APMuslim pilgrim pray outside Namira mosque in Arafat near MeccaPhotograph: Hassan Ammar/APMuslim pilgrims pray at Namirah Mosque in ArafatPhotograph: Yahya Arhab/EPAMuslim pilgrims pray at Namirah Mosque in Arafat during the most important ritual of the annual pilgrimage of Muslims to MeccaPhotograph: YAHYA ARHAB/EPAPilgrims rest on the road into Mina, three miles east of MeccaPhotograph: Mustafa Ozer/AFP/Getty ImagesA Muslim pilgrim prays on a rocky hill known as the Mount of MercyPhotograph: Hassan Ammar/APMuslim pilgrims pray on Mount of Mercy in Arafat, where Muslims believe the Islamic prophet Muhammad stood and delivered the farewell sermonPhotograph: Yahya Arhab/EPAA Muslim pilgrim has his head shaved after throwing pebbles at a stone pillar representing the devil during the Hajj pilgrim in Mina, near MeccaPhotograph: Hassan Ammar/APMuslim pilgrims arrive to cast stones at pillars symbolising Satan, part of a pilgrimage rite, in MenaPhotograph: Mohammed Salem/ReutersMuslim pilgrims arrive to pray at Mount Arafat. Pilgrims flooded into the Arafat plain from Mecca and Mina before dawn for a key ritual around the site, where the prophet Mohammed gave his farewell sermon on this day in the Islamic calendar 1,378 years agoPhotograph: Mustafa Ozer/AFP/Getty ImagesMuslim pilgrims leave their signatures at Mount Arafat, south-east of the Saudi holy city of MeccaPhotograph: Mustafa Ozer/AFP/Getty ImagesPilgrims cast stones at a pillar, symbolising the stoning of Satan, in Mina. The first day of stoning marks the start of Eid al-Adha, or feast of sacrificePhotograph: Hassan Ammar/APPilgrims perform the final walk around the Kaaba (Tawaf al-Wadaa) at the Grand Mosque in Mecca. Photograph: Mustafa Ozer/AFP/Getty ImagesPeople crowd around the KaabaPhotograph: Mustafa Ozer/AFP/Getty ImagesThe final walk around the Kaaba in progressPhotograph: Mustafa Ozer/AFP/Getty Images