The Compendium of Bheḷa 1.20

The vessel is said to be the heart; in it are ten vessels: / four upward, two transverse, and four downward in sequence.

From them, the root vessels divide transversely into various vessels; / therefore, the knowledge of objects, memory, and mental concentration [reside there].

From the heart the chyle emerges; thence it proceeds everywhere; / through the vessels it returns to the heart; therefore, the vessels originate from it.

And the vital breaths in the heart are situated in a circle, like the pericarp in a lotus; / therefore, one does not endure injury to the vital spot in the heart.

The shape of a lotus and of the fruit of kumbhikā, / and the color of these very two, does the heart of men bear.

For just as the closed lotus blooms during the day and [closes] at night, / so the heart is considered closed in sleep and open when awake.

One should know water as the great essence, and food as the great medicine; / there [water is] the great anointment, and fire is supreme and great.

Water is the source of tastes, and food is considered the supreme sustenance; / it unites again the dissolved body of embodied beings.

They say vapor is a portion of the sun, whence the origin of clouds is taught; / from the cloud comes rain, thence foods; therefore, fire is supreme and great.

Sweat, blood, urine, and froth are internal waste products; / dew, snow, and waters are declared to be external. […] / […] Thus ends the twentieth chapter in Bheḷa. Chapter twenty-one. […] / […] and persons to be purged, / to be given non-unctuous enemas, to be given unctuous enemas, and vāta diseases entirely.