The Ritual of Embalming Papyrus or Papyrus of the Embalming Ritual is one of only two extant papyri which detail anything at all about the practices of mummification used within the burial practices of Ancient Egyptian culture.
One version of the papyri is held in the Egyptian Museum, Cairo (Pap. Boulaq No.3) and the other is in the Louvre (No. 5158).[1][2]