'Abdur Rahman bin Ya'mar Daili (may Allah be pleased with him) says: I was present with the Messenger of Allah (peace and blessings of Allah be upon him) while he was standing at Arafat. Some people from Najd came to him and asked: O Messenger of Allah! What is Hajj? The Messenger of Allah (peace and blessings of Allah be upon him) said: "Hajj is standing at Arafat. Whoever comes to Arafat before the dawn of the night of Muzdalifah, his Hajj is complete. And the days at Mina are three (the 11th, 12th, and 13th of Dhul-Hijjah). Whoever hastens and leaves after two days, that is, on the 12th of Dhul-Hijjah, there is no sin upon him. And whoever stays for the third day, there is no sin upon him either." Then the Messenger of Allah (peace and blessings of Allah be upon him) made a man sit behind him, and he was announcing these words. 1__REF_N__

'Abdur Rahman bin Ya'mar Daili (may Allah be pleased with him) says that I came to the Messenger of Allah (peace and blessings of Allah be upon him) at Arafat, and meanwhile some people from Najd came to him, then he narrated a similar hadith. Muhammad bin Yahya says: I do not consider any hadith of Thawri better than this.