The Prophet ﷺ addressed the people at Mina and he made them stay in their dwellings. He then said: The Muhajirun (Emigrants) should stay here, and he made a sign to the right side of the qiblah, and the Ansar (the Helpers) here, and he made a sign to the left side of the qiblah; the people should stay around them.  

عَنْ رَجُلٍ مِنْ أَصْحَابِ النَّبِيِّ ﷺ قَالَ خَطَبَ النَّبِيُّ ﷺ النَّاسَ بِمِنًى وَنَزَّلَهُمْ مَنَازِلَهُمْ فَقَالَ لِيَنْزِلِ الْمُهَاجِرُونَ هَا هُنَا وَأَشَارَ إِلَى مَيْمَنَةِ الْقِبْلَةِ وَالأَنْصَارُ هَا هُنَا وَأَشَارَ إِلَى مَيْسَرَةِ الْقِبْلَةِ ثُمَّ لْيَنْزِلِ النَّاسُ حَوْلَهُمْ