Yahya related to me from Malik from Nafi that Abdullah ibn Umarused to pray dhuhr, asr, maghrib, isha and subh at Mina. Then in themorning, after the sun had risen, he would go to Arafa .Malik said, "What we are all agreed upon here (in Madina) is that theimam does not recite the Qur'an out loud in dhuhr on the day of Arafa,and that he gives a khutba to the people on that day, and that theprayer on the day of Arafa is really a dhuhr prayer, and even if itcoincides with a jumua it is still a dhuhr prayer, but one which hasbeen shortened because of travelling."Malik said that theimam of the pilgrims should not pray the jumua prayer if the day ofArafa, the day of sacrifice or one of the three days after the day ofsacrifice, was a Friday.
USC-MSA web (English) reference: Book 20, Hadith 204
Arabic reference: Book 20, Hadith 903