كتاب الحج
15  
The Book of Pilgrimage
(21)
Chapter: The Standing and the Saying of Allah, The Most High: "Then depart from the place whence all the people depart"
(21)
باب فِي الْوُقُوفِ وَقَوْلِهِ تَعَالَى ‏{‏ ثُمَّ أَفِيضُوا مِنْ حَيْث أَفَاضَ النَّاسُ}
Sahih Muslim 1219 b

Hisham narrated on the authority of his father that the Arabs with the exception of Hums who were Quraish, and their descendants, circumambulated the House naked. They kept circumambulating In this state of nudity unless the Hums supplied to them the clothes. The male provided (clothes) to the male and the female provided clothes to the female. And the Hums did not get out of Muzdalifa, whereas the people (other than the Quraish) went t o 'Arafat. Hisham said on the authority of his father who related from 'A'isha (Allah be pleased with her) who said:

Hums are those about whom Allah, the Exalted and Glorious, revealed this verse:" Then hasten to where the people hasten." She (further) said: The people hastened on from 'Arafat, whereas Hums hastened from Muzdalifa, and said: We'do not hasten but from Haram. But when this (verse) was revealed:" Hasten on from that (place) where the people hasten on," they (the Quraish) then went to 'Arafat.
وَحَدَّثَنَا أَبُو كُرَيْبٍ، حَدَّثَنَا أَبُو أُسَامَةَ، حَدَّثَنَا هِشَامٌ، عَنْ أَبِيهِ، قَالَ كَانَتِ الْعَرَبُ تَطُوفُ بِالْبَيْتِ عُرَاةً إِلاَّ الْحُمْسَ وَالْحُمْسُ قُرَيْشٌ وَمَا وَلَدَتْ كَانُوا يَطُوفُونَ عُرَاةً إِلاَّ أَنْ تُعْطِيَهُمُ الْحُمْسُ ثِيَابًا فَيُعْطِي الرِّجَالُ الرِّجَالَ وَالنِّسَاءُ النِّسَاءَ وَكَانَتِ الْحُمْسُ لاَ يَخْرُجُونَ مِنَ الْمُزْدَلِفَةِ وَكَانَ النَّاسُ كُلُّهُمْ يَبْلُغُونَ عَرَفَاتٍ ‏.‏ قَالَ هِشَامٌ فَحَدَّثَنِي أَبِي عَنْ عَائِشَةَ - رضى الله عنها - قَالَتِ الْحُمْسُ هُمُ الَّذِينَ أَنْزَلَ اللَّهُ عَزَّ وَجَلَّ فِيهِمْ ‏{‏ ثُمَّ أَفِيضُوا مِنْ حَيْثُ أَفَاضَ النَّاسُ‏}‏ قَالَتْ كَانَ النَّاسُ يُفِيضُونَ مِنْ عَرَفَاتٍ وَكَانَ الْحُمْسُ يُفِيضُونَ مِنَ الْمُزْدَلِفَةِ يَقُولُونَ لاَ نُفِيضُ إِلاَّ مِنَ الْحَرَمِ فَلَمَّا نَزَلَتْ ‏{‏ أَفِيضُوا مِنْ حَيْثُ أَفَاضَ النَّاسُ‏}‏ رَجَعُوا إِلَى عَرَفَاتٍ ‏.‏
Reference : Sahih Muslim 1219b
In-book reference : Book 15, Hadith 164
USC-MSA web (English) reference : Book 7, Hadith 2808
  (deprecated numbering scheme)