It was narrated that Aishah said:"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.'"
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا أَبُو مُعَاوِيَةَ، قَالَ حَدَّثَنَا هِشَامٌ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ كَانَتْ قُرَيْشٌ تَقِفُ بِالْمُزْدَلِفَةِ وَيُسَمَّوْنَ الْحُمْسَ وَسَائِرُ الْعَرَبِ تَقِفُ بِعَرَفَةَ فَأَمَرَ اللَّهُ تَبَارَكَ وَتَعَالَى نَبِيَّهُ صلى الله عليه وسلم أَنْ يَقِفَ بِعَرَفَةَ ثُمَّ يَدْفَعُ مِنْهَا فَأَنْزَلَ اللَّهُ عَزَّ وَجَلَّ { ثُمَّ أَفِيضُوا مِنْ حَيْثُ أَفَاضَ النَّاسُ } .
Nesai
The Book of Hajj • Hadith 3012