In ethnomedicine, the idea of "passing through" entails:

"Passing through" means releasing the negative energy that is causing a disease.

Explanation:

Ethnomedicine is an area of research or application of ethnology whose object is practices aimed at health conservation and recovery or medicine, as the name implies. It involves ethnographic descriptions of practices and beliefs (mythical narratives) with which a specific culture, usually indigenous or considered primitive, prevents and treats diseases and / or comparative ethnological studies of this practice and the study of theories that support this comparison. .

In ethnomedicine there is a practice called passing through, where an opening is created in some object (a tree or a wall) and the sick person must go through that opening. Opening will suck out all the negative energy that was in a person's body that was causing the disease.