Sayyiduna Urwah bin Mudarris (may Allah be pleased with him) said that he performed Hajj in the time of the Prophet (peace and blessings be upon him) and found the people at Jam'. He went to Arafat at night, returned from there until he came to Jam', and then came to the Messenger of Allah (peace and blessings be upon him) and said: O Messenger of Allah (peace and blessings be upon him)! I have exhausted myself and my she-camel; so do I have a Hajj? The Prophet (peace and blessings be upon him) said: "Whoever prays the morning prayer with us and stays with us until we depart, having come to Arafat before that, by night or by day, his Hajj is complete and he has finished (removing) his dishevelment (tafath)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9468