Day of Arafah

The Day of Arafah (Arabic: يوم عرفة, romanized: Yawm 'Arafah) is an Islamic holiday that falls on the ninth day of Dhu al-Hijjah of the lunar Islamic Calendar. It is the second day of the Hajj pilgrimage and is followed by the holiday of Eid al-Adha. At dawn of this day, Muslim pilgrims will make their way from Mina to a nearby hillside and plain called Mount Arafat and the Plain of Arafat. It was from this site that the Islamic prophet Muhammad gave one of his last sermons in the final year of his life. Some Muslims hold that part of the Quranic verse announcing that the religion of Islam had been perfected was revealed on this day.
Mount Arafat is a granodiorite hill about 20 km (12 mi) southeast of Mecca on the plain of Arafat. Mount Arafat reaches about 70 m (230 ft) in height and is known as the "Mountain of Mercy" (Jabal ar-Rahmah). According to Islamic tradition, the hill is the place where Muhammad stood and delivered the Farewell Sermon to the Muslims who had accompanied him for the Hajj towards the end of his life.
On 9 Dhu al-Hijjah before noon, pilgrims arrive at Arafat, a barren plain some 20 kilometres (12 mi) east of Mecca, where they stand in contemplative vigil: they offer supplications, repent and atone for their past sins, seek mercy of God, and listen to Islamic scholars giving sermons from near Mount Arafat. Lasting from noon through sunset, this is known as 'standing before God' (wuquf), one of the most significant rites of Hajj. At Masjid al-Namirah, pilgrims offer Zuhr (Dhohr) and Asr prayers together at noon time. A pilgrim's Hajj is considered invalid if they do not spend the afternoon on Arafat.
As Husayn ibn Ali recited the prayer during the Hajj at Mount Arafat on 9 Dhu al-Hijjah, Shia Muslims during the Hajj recite the Arafah prayer from Zuhr prayer to sunset. This day is called prayer day, specially for people who stand on Mount Arafat. On the Day of Arafah, those who cannot make it to Mecca will go to other holy places such as mosques to recite Arafah prayer.
Fasting on the Day of Arafah for non-pilgrims is a highly recommended Sunnah which entails a great reward; Allah forgives the sins of two years. It was narrated from Abu Qatadah that Muhammad was asked about fasting on the day of 'Arafah and he replied:
Imam An-Nawawi mentioned in his book al-Majmu', "With regard to the ruling on this matter, Imam As-Shafi'i and his companions said: It is mustahabb (recommended) to fast on the day of Arafah for the one who is not in Arafah. As for the pilgrim who is present in Arafah, Imam As-Shafi'i in his book Al-Mukhtasar and his followers declared 'It is mustahabb (recommended) for him not to fast'."
Prohibiting the pilgrims from fasting on these days is a great mercy for them, for fasting will exert undue hardship on the person performing the hajj. Above all, Muhammad did not fast while he stood before Allah offering supplications in Arafah. On the other hand, those who are not performing their hajj may observe fasting to gain the merits of the blessed day.
Abu Qatada al-Ansari narrated that Muhammad was asked about fasting on the Day of Arafah, whereupon he said: It expiates the sins of the preceding year and the coming year. Also about fasting on the Ashura (10 Muharram) he said: It expiates the sins of the preceding year.
In Sahih Muslim it was narrated from Aisha that Muhammad said:
The people would fast on this day to get their bad deeds in the upcoming year, and the past year, taken away.