It was narrated from Salamah bin Nubait that his father performed Hajj and said:
“I saw the Prophet ﷺ delivering the sermon atop his camel.”

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ سَلَمَةَ بْنِ نُبَيْطٍ، عَنْ أَبِيهِ، أَنَّهُ حَجَّ فَقَالَ رَأَيْتُ النَّبِيَّ ـ ﷺ ـ يَخْطُبُ عَلَى بَعِيرِهِ .