The ceremony that symbolically restored a mummy’s ability to eat, breathe, and speak was the Opening of the Mouth.
Egyptian priests performed this funerary ritual on a mummy, statue, or occasionally a coffin. They touched or presented ritual instruments to the mouth and other parts of the body, symbolically reactivating the deceased’s senses. The ceremony allowed the dead person to receive food, drink, and offerings in the afterlife.
The ritual was connected with Anubis because Anubis was strongly associated with embalming and the preparation of the dead. It was not the same as the weighing of the heart, which concerned moral judgment before Osiris. Nor was it merely the physical process of mummification.