Sahih Muslim Book 7, Hadith Number 2746.

Chapter : What is to be done with a Muhrim when he dies.

Ibn Abbas (Allah be pleased with them) reported that a person fell down from his camel (in a state of Ihram) and his neck was broken and he died. Thereupon Allah’s Apostle.(may peace be upon him) said: Bathe him with water mixed with the leaves of the lote tree and shroud him in his two (pieces of) cloth (Ihram), and do not cover his head for Allah will raise him on the Day of Resurrection Pronouncing Talbiya.