Bones that look like other things

"There are are eight abodes, eight places of sight, eight deities, and eight Purushas.
Whoever understands these Purushas in their division, and again in their union, has overcome the world. I ask the about the Purusha in the Upanishads. And thou explain not him to me, thy head fall off."
S'akalya knew him not, so his head fell off.
Moreover robbers took away his bones, mistaking them for something else.

- The Brihad A'Ranyaka Upanishad