This shloka continues the jagat-section that began in 15.12. In 15.12, Bhagavān showed Himself as the tejas in the sun, moon, and fire. In 15.13, He showed Himself as the sustaining power in the earth, the solar energy that supports living beings, and the Soma-rasa that nourishes plants. Now 15.14 brings the teaching even closer: the food nourished by earth, sun, moon, and plants becomes useful to the body only when it is digested. Bhagavān says that this digestive power too is His manifestation.

The verse begins: ahaṃ vaiśvānaraḥ bhūtvā — “I become Vaiśvānara.” Vaiśvānara here means the digestive fire, the internal fire in the stomach. In the previous verses, Bhagavān pointed to external natural powers. Here, He points to the internal agni, the fire that “cooks” food inside the body. Swami explains that food is cooked twice: first outside by external fire, and then inside by the digestive fire. Only after this second transformation can the body absorb the food.

The next phrase is prāṇināṃ deham āśritaḥ — residing in the bodies of living beings. This digestive fire is not only in one person or one community. It is present in the bodies of living beings. Every creature that consumes food depends on a power of assimilation. The body does not simply receive food and immediately become nourished. Food must be broken down, transformed, absorbed, and distributed. Vedānta asks us to see this entire power as Bhagavān’s manifestation.

Then Bhagavān says: prāṇāpāna-samāyuktaḥ — associated with prāṇa and apāna. Swami explains this through the analogy of external fire. When people kindle a cooking fire or a ritual fire, they fan it. Similarly, the digestive fire is “fanned” by breathing. As breathing increases, internal fire is kindled more strongly and hunger increases; when breathing slows down, hunger also slows. In this verse, prāṇa and apāna refer to the breathing process that supports the digestive fire.

Finally Bhagavān says: pacāmi annaṃ caturvidham — I digest the four kinds of food. The four kinds are classified not by cuisine, region, or ingredient, but by the mode of consumption. Swami lists them as bhakṣyam, bhojyam, lehyam, and coṣyam. Bhakṣyam is food that is bitten and chewed. Bhojyam is food or drink that is swallowed directly. Lehyam is something licked, like honey, pickle, or certain herbal preparations. Coṣyam is something sucked, like sugarcane or juice through a straw. These four cover normal modes of eating.

The teaching is very practical. We often think, “I eat, I digest, I gain strength.” But digestion is not under ego’s direct command. I may choose the food, place it in the mouth, chew it, and swallow it. After that, a vast intelligent process takes over. Enzymes, acids, juices, heat, movement, breath, and assimilation all function according to Bhagavān’s order. Swami connects this with the idea of samāna-prāṇa, the digestive power. This power belongs to Bhagavān.

This is why eating is treated as sacred in the tradition. Before eating, food is offered to Bhagavān, not only to a deity outside, but to Bhagavān present within as Vaiśvānara. Swami connects this with prāṇāgnihotram, the idea that eating itself can be understood as an offering into the internal fire. The food is offered to the digestive fire with awareness, just as offerings are placed into a ritual fire.

So 15.14 completes the movement from outer nourishment to inner assimilation. 15.13 showed how food arises from earth, sun, moon, and plants. 15.14 shows how that food becomes part of the body through Bhagavān’s internal fire. The wise person therefore does not eat casually. Food becomes prasāda, digestion becomes Bhagavān’s work, and the body becomes an altar where Vaiśvānara-agni receives the offering.