It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that a man in the state of ihram was thrown by his mount and killed, so the Messenger of Allah (peace and blessings be upon him) said: "Wash him with water and lote-tree leaves, shroud him in his two (ihram) garments, and do not cover his head, for he will be raised on the Day of Resurrection reciting the Talbiyah."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12470