Discourse on the Rising of the Breath

Both eyes may ache for some days; let forty days pass for the vision to stabilize. At first, the form seen is like a mirage original: "mrigatrishna"; literally "deer’s thirst," a common Indian metaphor for a mirage or illusion, and after that, a yellow color appears. 84.

Doha
A couplet form used for key philosophical points.
Then the moon and its phases appear. The fire of the body is seen, and many hidden secrets manifest and arrive there. 85.

Chaupai
A four-line verse structure common in medieval Indian poetry.
...and the head feels a certain tension; then a mass of radiance like the rising sun is produced. Then both the Sun and Moon Internal symbols for the solar and lunar psychic channels are shown. The yogi attains the status of a perfected master Siddha; an enlightened being with semi-divine powers and reaches the Inaccessible. 86.

There, animals, birds, and humans are "slain" This likely refers to the yogi's power to subdue the senses or perhaps a metaphor for the stillness of the living world during deep meditation. Whatever the seeker looks upon, they cross over. Leaving one's own body, one enters a dead body; the dead lives, and one's self "dies" This describes "Parakaya Pravesha," the legendary yogic power of transferring consciousness into another form. 87.

Then for that purpose, one returns to their own body. Through that mantra, one attains the state of the Guru. When this form stabilizes in the forehead, then after that, it moves to the top of the head. 88.

Entering the state of meditative fainting Murchani; a yogic state of deep absorption or ecstasy where outward consciousness is lost, the shadow of the practitioner does not even fall upon the earth. Heaven and the underworld are seen within this; one perceives the gods and the celestial nymphs Apsaras; beautiful, supernatural female beings of the clouds and waters. 89.

Whatever the qualities, forms, and signs...
92 The pride of worldly knowledge is overturned. When the vision moves to the heart, one speaks of the mysteries of the seven seas. 90.

Dohra
By looking at the back Likely referring to the internal gaze directed toward the spine or the "back" of the inner vision, the fire is turned inward. The awareness of heaven and the fear of the underworld are understood; everything becomes known. 91.

Chaupai
When the inner fire comes into sight, the full moon appears again. Whatever sciences and branches of knowledge exist in the world, they all flow into the practitioner. 92.

Then, pride is surrendered. One becomes intoxicated with divine bliss and no worldly awareness remains. The ego is released, one merges with the Absolute Brahma; the ultimate, infinite reality, and reaches the state of the Unseeable Alakh; the formless aspect of the Divine that cannot be perceived by physical eyes. 93.

If one contemplates this effort for one year, they may "die" to the world or "slay" the ego. Within one year, the goal is mastered. The practitioner becomes a Siddha, their body and...