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Pilgrims stream to the plain of Arafat
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The site is where the Prophet Muhammed gave his last sermon
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The day is considered one of the most important in the Islamic calendar.
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Pilgrims spend the day here in prayer and reflection until sunset.
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Muslims who are not at the Hajj join them in spirit by fasting this day.
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A pilgrim's Hajj is considered invalid if they do not spend the afternoon at Arafat.
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Pilgrims must spend the time within a defined area on the plain of Arafat.
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Vendors also join the crowds, to sell food to hungry pilgrims.
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The day of Arafat falls on the ninth day of the Islamic month of Dhul-Hijjah.
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It is said that a believer who fasts on this day expiates the past year's sins
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The day of prayer falls on the second day of the Hajj.
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This year, close to 3 million pilgrims flooded the plain and nearby Mount Arafat.
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Pilgrims also fill the mosque located on the plain.
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Muslims from all over the globe are present at the pilgrimage.
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At sunset, pilgrims head to Muzdalifah, about 9km away.
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They will spend the night under the open sky until just before sunrise.
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Meanwhile, some pilgrims begin to collect pebbles for the next day's rites.