It wasnarrated that 'Ali said:
"The Messenger of Allah (ﷺ) stoppedat'Arafat and said: 'This is the place of standing, and all of'Arafat is a place of standing.'" (FR)
English reference (FR): Vol. 4, Book 25, Hadith 3010 (FR)
Arabic reference (FR): Book 25, Hadith 3124 (FR)