Ashtangasamgraha 19.9

19.9

Indeed, the bodily tissues, when repeated with similar foods and activities, or with those predominantly possessing similar qualities, attain increase;

but [they attain] decrease with opposite ones, or with those predominantly possessing opposite qualities.

For those bodily tissues that are heavy are built up by heavy ones through producing unity;

light ones, however, [are built up] by light ones; but through opposites that produce separateness, they are reduced.

Therefore, blood is nourished more especially by blood than by other substances, flesh by flesh, fat by fat, bone by cartilage, marrow by marrow, semen by semen, and the fetus by raw egg.

Where, however, there is an absence of foods and activities that have such a characteristic similarity [to the tissue], or where ingestion of those present is impossible due to incompatibility, disgust, aversion, or another reason,

there, the ingestion of foods and activities of a different nature that predominantly possess similar qualities is better.

And with them, one should make a poultice,

or with mustard, black salt, rock salt, and śārṅgeṣṭā,

or with baheda-fruit pulp alone.

This powder, applied just once at midnight with a blue water lily, dispels the irritation of the eyes immediately.