"I lost a camel of mine, so I went to look for it in Arafat on the day of Arafat. I saw the Prophet standing there and said: 'what is he doing here?' He is one of the Hums.'"
Sunan an-Nasa'i Book 24, Hadith 396
← Previous Hadith "The Quraish used to stand in Al-Muzdalifah and they called themselves Al-Hums, and the rest of Arabs stood in Arafat. Then Allah, Blessed and Most High, commanded his Prophet to stand in Arafat, and then move on from there. Allah, the Mighty and Sublime, revealed: 'Then depart from the place whence all the people depart.'"

Sunan an-Nasa'i Book 24, Hadith 395 Next Hadith → "We were standing in Arafat in a place far from the place of standing, and Ibn Mirba Al-Ansari came and said: 'I am the messenger of Messenger of Allah to you; he says: 'Stay where you are (for it is a place of ritual), for you are following the legacy of you father Ibrahim, peace be upon him.'"

Sunan an-Nasa'i Book 24, Hadith 397