While a man was standing at Arafah with the Messenger of Allah ﷺ, he fell from his mount and it broke his neck, or he said, it killed him. The Messenger of Allah ﷺ said, "Wash him with water and lote leaves, shroud him in his two garments, do not apply perfume to him, and do not cover his head, for Allah will raise him on the Day of Resurrection reciting the talbiyah."
أخبرنا قتيبة قال حدثنا حماد عن أيوب عن سعيد بن جبير
بينا رجل واقف بعرفة مع رسول الله ﷺ إذ وقع من راحلته فأقعصه أو قال فأقعصته فقال رسول الله ﷺ اغسلوه بماء وسدر وكفنوه في ثوبين ولا تحنطوه ولا تخمروا رأسه فإن الله عز وجل يبعثه يوم القيامة ملبيا
Bukhari, Funerals, chapter on shrouding in two garments, no. 1265, and Muslim, Hajj, chapter on what is done with the one in ihram if he dies, no. 94/1206, from the hadith of Hammad bin Zayd through this chain, and it is in Kubra, no. 3838.