أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ سُفْيَانَ، عَنْ سَلَمَةَ بْنِ نُبَيْطٍ، عَنْ أَبِيهِ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَخْطُبُ عَلَى جَمَلٍ أَحْمَرَ بِعَرَفَةَ قَبْلَ الصَّلاَةِ ‏.‏

It was narrated from Salamah bin Nubait, that his father said: "I saw the Messenger of Allah delivering a Khutab atop a red camel in Arafat, before the Salah." (Daif) Translation Not Available

Book Ref: Sunan An Nisai Book 24 Hadith 3007
Web Ref:  Sunan An Nisai Vol 3 Book 24 Hadith 3010