مناسك حج - مكارم شيرازى، ناصر - الصفحة ١٥٨ - Hajj al -Tamattu
٢ -Wuquf in Arafat
Article ٢٥٧- The second act of obligatory acts of Hajj is Wuquf in Arafat." Arafat" is a desert about ٢٠ km from Mecca which has became semi- treed today and it is obligatory for Hajjis to say the noon of the ninth day of Dhul- Hijjah in that place.
Article ٢٥٨- It is precaution to remain from the beginning of the noon of the ninth day until the sunset in there, afoot or ride, moving or sitting, awake or partly sleep, and it is Mustahab to pray and notice to the pure essence of Allah and asking forgiveness from him in that time, and the superiority of praying in that place and time is unexampled.
Article ٢٥٩- Wuquf in Arafat is worship and should be performed with intention of closeness to Allah, and its intention has no specific statement and having the intention of performing that in the heart is enough.