Is it permissible for the one washing the deceased to disclose to people signs of a bad ending that he sees on the deceased?

The washer of the deceased must conceal any flaws he observes in the body, as revealing them is a form of backbiting and causes grief to the family. An exception to this is if the deceased was known for innovation (bid'ah), immorality, and harming Muslims; in such a case, it is recommended to expose the repulsive appearance of the body to warn people against his ways.