Sahih al-Bukhari 1665
Narrated `Urwa:
During the Pre-Islamic period of Ignorance, the people used to perform Tawaf of the Ka`ba naked 
except the Hums; and the Hums were Quraish and their offspring. The Hums used to give clothes to 
the men who would perform the Tawaf wearing them; and women (of the Hums) used to give clothes 
to the women who would perform the Tawaf wearing them. Those to whom the Hums did not give 
clothes would perform Tawaf round the Ka`ba naked. Most of the people used to go away (disperse) 
directly from `Arafat but they (Hums) used to depart after staying at Al-Muzdalifa. `Urwa added, "My 
father narrated that `Aisha had said, 'The following verses were revealed about the Hums: Then depart 
from the place whence all the people depart--(2.199) `Urwa added, "They (the Hums) used to stay at 
Al-Muzdalifa and used to depart from there (to Mina) and so they were sent to `Arafat (by Allah's 
order)."
حَدَّثَنَا فَرْوَةُ بْنُ أَبِي الْمَغْرَاءِ، حَدَّثَنَا عَلِيُّ بْنُ مُسْهِرٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، قَالَ عُرْوَةُ كَانَ النَّاسُ يَطُوفُونَ فِي الْجَاهِلِيَّةِ عُرَاةً إِلاَّ الْحُمْسَ، وَالْحُمْسُ قُرَيْشٌ وَمَا وَلَدَتْ، وَكَانَتِ الْحُمْسُ يَحْتَسِبُونَ عَلَى النَّاسِ يُعْطِي الرَّجُلُ الرَّجُلَ الثِّيَابَ يَطُوفُ فِيهَا، وَتُعْطِي الْمَرْأَةُ الْمَرْأَةَ الثِّيَابَ تَطُوفُ فِيهَا، فَمَنْ لَمْ يُعْطِهِ الْحُمْسُ طَافَ بِالْبَيْتِ عُرْيَانًا، وَكَانَ يُفِيضُ جَمَاعَةُ النَّاسِ مِنْ عَرَفَاتٍ، وَيُفِيضُ الْحُمْسُ مِنْ جَمْعٍ‏.‏ قَالَ وَأَخْبَرَنِي أَبِي عَنْ عَائِشَةَ ـ رضى الله عنها ـ أَنَّ هَذِهِ الآيَةَ نَزَلَتْ فِي الْحُمْسِ ‏{‏ثُمَّ أَفِيضُوا مِنْ حَيْثُ أَفَاضَ النَّاسُ‏}‏ قَالَ كَانُوا يُفِيضُونَ مِنْ جَمْعٍ فَدُفِعُوا إِلَى عَرَفَاتٍ‏.‏