Ezequiel 24:17

17 Groan quietly; do not mourn for the dead. Keep your turban fastened and your sandals on your feet; do not cover your mustache and beard or eat the customary food of mourners."

17 Sigh, but not aloud, make no mourning for the dead; bind thy headtire upon thee, and put thy shoes upon thy feet, and cover not thy lips, and eat not the bread of men.