A’ishah said “Quraish and those who followed their religion used to station at Al Muzdalifah and they were called Al Hums and the rest of Arabs used to station at ‘Arafah. When Islam came, Allaah the most High commanded His Prophet ﷺ to go to ‘Arafah and station there then go quickly from it. That is in accordance with the words of Him Who is exalted “Then go quickly from where the people went quickly.” (Using translation from Abū Dāʾūd 1910)   

كَانَتْ قُرَيْشٌ وَمَنْ دَانَ دِينَهَا يَقِفُونَ بِالْمُزْدَلِفَةِ وَكَانُوا يُسَمَّوْنَ الْحُمْسَ وَكَانَ سَائِرُ الْعَرَبِ يَقِفُونَ بِعَرَفَةَ فَلَمَّا جَاءَ الْإِسْلَامُ أَمَرَ اللهُ نَبِيَّهُ ﷺ أَنْ يَأْتِيَ عَرَفَاتٍ فَيَقِفَ بِهَا ثُمَّ يُفِيضَ مِنْهَا فَذَلِكَ قَوْلُهُ {ثُمَّ أَفِيضُوا مِنْ حَيْثُ أَفَاضَ النَّاسُ} [البقرة 199] لَفْظُ حَدِيثِ أَبِي مُعَاوِيَةَ  

[Machine] "Allah, the Exalted and Almighty, says, 'Then proceed from where [all] the people proceed." [Al-Baqarah 199]  

اللهُ سُبْحَانَهُ وَتَعَالَى {ثُمَّ أَفِيضُوا مِنْ حَيْثُ أَفَاضَ النَّاسُ} [البقرة 199]  

[Machine] I led a camel astray so I went to look for it on the day of Arafah, and I saw the Messenger of Allah ﷺ standing at Arafah. So I said, "By Allah, what is he doing here?"  

أَضْلَلْتُ بَعِيرًا لِي فَذَهَبْتُ أَطْلُبُهُ يَوْمَ عَرَفَةَ فَرَأَيْتُ رَسُولَ اللهِ ﷺ وَاقِفًا بِعَرَفَةَ فَقُلْتُ هَذَا وَاللهِ مِنَ الْحُمْسِ مَا شَأْنُهُ؟  

[Machine] Sufyan, referring to Quraysh, which was called "Al-Hums". Quraysh did not go beyond the Haram and they would say, "We are the people of Allah, we do not leave the Haram." The rest of the people would stand at Arafah, and this is the saying of Allah, "Then depart from the place whence all the people depart" (Quran, Al-Baqarah 2:199). Sufyan Al-Ahmas Al-Shadid in his religion said, "This is the statement of Isma'ili, the narration of Abu Bakr ibn Abi Shaybah to his saying, 'From Al-Hums, what does he have here?'"  

سُفْيَانُ يَعْنِي قُرَيْشًا وَكَانَتْ تُسَمَّى الْحُمْسَ وَكَانَتْ قُرَيْشٌ لَا تُجَاوِزُ الْحَرَمَ يَقُولُونَ نَحْنُ أَهْلُ اللهِ لَا نَخْرُجُ مِنَ الْحَرَمِ وَكَانَ سَائِرُ النَّاسِ تَقِفُ بِعَرَفَةَ وَذَلِكَ قَوْلُ اللهِ ﷻ {ثُمَّ أَفِيضُوا مِنْ حَيْثُ أَفَاضَ النَّاسُ} [البقرة 199] قَالَ سُفْيَانُ الْأَحْمَسُ الشَّدِيدُ فِي دِينِهِ قَالَ الْإِسْمَاعِيلِيُّ حَدِيثُ أَبِي بَكْرِ بْنِ أَبِي شَيْبَةَ إِلَى قَوْلِهِ مِنَ الْحُمْسِ مَا لَهُ هَا هُنَا