From The Long Lost Friend:
If you are calumniated or slandered to your very skin, to your very flesh, to your very bones, cast it back upon the false tongues. + + + Take off your shirt, and turn it wrong side out, and then run your two thumbs along your body, close under the ribs, starting at the pit of the heart down to the thighs.
The grimoire The Long Lost Friend lists this spell.
Timeline of related events
1820Publication of Hohmann's Long Lost Friend (lists this spell)