Khat (ẖt)
The physical body
Khat — the corruptible physical body, that which decays. The whole apparatus of mummification exists to preserve the khat as a vessel: not because the body itself is the soul, but because several of the other components require an intact body-image as their anchor. The Book of the Dead spells repeatedly secure the khat 'against the worm' so the rest of the funerary anthropology can function.
Point 1 of 9 in Egyptian Nine-Part Soul
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Book of the Dead, Spell 154 ('not allowing the corpse to perish') (primary_canonical)
Faulkner's Ancient Egyptian Book of the Dead, Spell 154, 'The spell for not letting the body perish,' is the direct funerary witness for preserving the deceased's body from decay; it concerns the khat's continued integrity, not a claim that the physical body is itself immortal.