Different from that (body) made of knowledge, more interior, is the Self made of bliss. By it the former is filled. Love is its head, joy its right wing, delight its left wing, bliss is its body, Brahman its tail and foundation.

This culminating verse presents the fifth kosha: ānandamaya-kosha, the sheath made of bliss. It is the subtlest layer, closest to the Ātman, and its foundation is Brahman itself.

Ānandamayaḥ — made of ānanda, joy, bliss. This is not sensory pleasure nor emotional happiness, but the inherent joy of the Self, which shines in deep sleep when all mental fluctuations cease.

The bird structure is formed by degrees of happiness:

• Priya (head) — love, affection, attraction toward the beloved
• Moda (right wing) — the joy of obtaining what is desired
• Pramoda (left wing) — the intense delight of full enjoyment
• Ānanda (body) — bliss itself, beyond any object
• Brahma (tail) — Brahman as ultimate foundation

The progression priya-moda-pramoda-ānanda shows increasing degrees of joy: from desire to attainment to enjoyment to objectless bliss. Pure ānanda depends on nothing external.

Brahma puccham — Brahman is the tail, the foundation. Here the teaching reaches its destination: beneath all the layers, supporting them all, is Brahman-Ātman, non-dual reality.

But even the ānandamaya is maya — a sheath, a modification. What lies beyond? The pure Self, without attributes, which cannot be described with the bird structure because it has no parts. That is the Ātman that was being sought from the beginning.

The five koshas are the spiritual anatomy of yoga: the map of the journey inward.