This shloka continues directly from 15.7. In 15.7, Bhagavān taught that Brahman, the original consciousness, appears in every living being as the jīva through reflection in the mind. That jīva, the subtle body with reflected consciousness, draws the mind and sense faculties from the physical body. Now 15.8 explains what happens during the transition from one body to another.

The verse begins with śarīraṃ yad avāpnoti — when it obtains a body. This refers to the jīva taking up a new physical body. The next phrase is yat ca api utkrāmati — and when it departs. This refers to the jīva leaving the present physical body. So the verse covers both sides of the movement: leaving one body and obtaining another.

The word īśvaraḥ appears here, but in this verse it does not mean Bhagavān in the cosmic sense. Here īśvaraḥ means the jīva as the master or occupant of the body. The body is like a residence. The jīva occupies it for a period, uses it to exhaust a particular set of puṇya-pāpa, and then moves on when that prārabdha karma is exhausted. Swami gives the practical image of a change of residence: the jīva leaves one “house” and enters another. The “rent” for each body is karma. When one set of prārabdha is exhausted, another set of karma determines the next body.

The verse then says gṛhītvā etāni saṃyāti — taking these, it travels. “These” refers back to the mind and sense faculties mentioned in 15.7. The jīva does not carry the physical eyeballs, ears, skin, tongue, or nose. Those remain with the old body. What travels are the subtle faculties: the powers of seeing, hearing, touching, tasting, and smelling, along with the mind. The physical organs are like external instruments; the subtle faculties are like the functional powers packed with the jīva.

A helpful way to understand this is the example of moving house. When a family moves, they do not carry the walls, doors, and floor of the old house. But they carry their important things: kitchen items, books, clothes, tools, and personal belongings. When they enter the new house, each item is placed in its proper room. Similarly, when the jīva takes a new body, the subtle sense faculties become connected with the new physical sense organs. The power of seeing is associated with the eye-location; the power of hearing with the ear-location; and so on. Then transactions begin again in the new setup.

Bhagavān gives the comparison: vāyuḥ gandhān iva āśayāt — just as wind carries fragrance from its source. The flower is visible, but the fragrance is invisible. The wind is also invisible, yet we know it is carrying fragrance because the smell reaches us. In the same way, the physical body is visible. The subtle body — mind and sense faculties — is invisible. The jīva is also not visible to the eyes. But the life and functions of the body reveal its presence. When the jīva leaves, the body may still be physically present, but it no longer functions as a living person.

Swami emphasizes that the difference between a live body and a dead body is not fully explainable merely by visible anatomy. Doctors can describe which functions have stopped, but Vedānta points to what has withdrawn: the subtle body with reflected consciousness. When that reflected consciousness, along with the mind, is no longer associated with the physical body, the body becomes a corpse. Life itself is therefore evidence of the presence of consciousness; death also points to the withdrawal of that enlivening presence.

A subtle question arises: how long does the jīva take to get another body? Swami explains that there is no fixed rule measurable by our present time system. Once the jīva leaves this body, this body’s time-space framework no longer applies. Even in dream, we enter a different time-space field. Similarly, different lokas and bodies involve different experiential frameworks. The timing depends on the fructification of karma, and it cannot be measured by ordinary human time.

The essential point of the verse is not curiosity about after-death travel. The main teaching remains the same: Brahman is present as the jīva through reflected consciousness. That jīva functions through the body, leaves the body, carries the subtle faculties, and enters another body according to karma. Just as invisible wind carrying invisible fragrance can be inferred through experience, the invisible jīva carrying the invisible subtle body is understood through the presence and absence of life.