The Compendium of Bheḷa 4.2

When the several limbs have fully grown, and the dhātus are grounded at their sources, / semen is clearly produced in the sixteenth year.

Likewise, in an old person, when the dhātus are wasted away, / distinctions are not separated as before, owing to [their] wasting.

Then a man comes to have little semen, or is thoroughly decrepit and weak; / he sees no semen, because of the wasting of all the dhātus.

Blood, flesh, fat, bones, marrow, semen, and likewise fire, / as well as feces and urine—one should know them to be diminished beyond ninety [years].

Here, a woman stricken by wind does not conceive an embryo; / likewise through a disorder of the yoni or through [unwholesome] food—for she is neither barren nor is he not a man.

Emesis, purgation, and non-unctuous enema: / therefore one should administer these to women; [then] they become well-known to bring forth [children].

Now, on this point a question arises: why do you not perceive sound with the nose, / or smell with the mouth, if space is equal everywhere?

And when the skin-part is uniform, why does one not perceive taste with another [part]? / Having heard those words, Punarvasu replied:

The nose and smell are earthy; form and the eye are fiery; / touch and the tactile organ are of wind; and the ear consists of sound and space.

And the gustatory organ and taste are watery; therefore, by these sense organs here, / apprehension of objects is taught according to their own nature, due to their having homologous qualities.

"For each constituent element, accompanied by the self, cognizes its own object, / and declare [it to occur] from the conjunction of the self, sense organs, mind, and objects." Thus said the venerable Ātreya. / Thus ends the second chapter in Bheḷa. / Third chapter. / Now we shall explain the chapter on the body entitled "Pertaining to Different Lineages" (Asamānagotrīya); thus said the venerable Ātreya.