Sahih Bukhari, Chapter: Funerals (Al-Janaaiz)

While a man was at 'Arafat (for Hajj) with Allah's Apostle the fell down from his Mount and broke his neck (and died). So Allah's Apostle said, "Wash him with water and Sidr and shroud him in two pieces of cloth and neither perfume him nor cover his head, for Allah will resurrect him on the Day of Resurrection and he will be saying 'Labbaik."