Sayyiduna Urwah bin Mudarris (may Allah be pleased with him) said: I came to the Prophet (peace and blessings be upon him) and said: "O Messenger of Allah! Has my Hajj been accomplished?" He (peace and blessings be upon him) said: "Whoever prays this prayer with us and stands with us at these places, having already departed from Arafat before that, by night or by day, his Hajj is complete and he has removed his grime (completed his rites)."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14452