I prayed behind the Messenger of Allah ﷺ at Mina, and there was the greatest number of people, and they prayed two rak'ahs on the occasion of the Farewell Pilgrimage. (Muslim said: Haritha b. Wahb al-Khuza'i is the brother of 'Ubaidullah b. 'Umar son of Khattab from the side of his mother.)
صَلَّيْتُ خَلْفَ رَسُولِ اللَّهِ ﷺ بِمِنًى وَالنَّاسُ أَكْثَرُ مَا كَانُوا فَصَلَّى رَكْعَتَيْنِ فِي حَجَّةِ الْوَدَاعِ قَالَ مُسْلِمٌ حَارِثَةُ بْنُ وَهْبٍ الْخُزَاعِيُّ هُوَ أَخُو عُبَيْدِ اللَّهِ بْنِ عُمَرَ بْنِ الْخَطَّابِ لأُمِّهِ