Hadith.2981 - In another narration, Imam (as) said:
"Those who stand under the Araak trees have no valid Hajj, as they are not within the designated standing area (Arafat)."
Al-Kāfi #1736“Abu ‘Abd Allah (a.s.), has said that when you pause and stay in ‘Arafat, stay close to the highland, the hills. The Holy prophet, O Allah,...
Al-Kāfi #1737“The Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, about al-Mawqaf (the...