Hadith
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)
Sahih · Abu Ghuddah
Sunan an-Nasa'i 3007 ·Book 24, Hadith 390·Also available on sunnah.com·