The tatah ksiyate prakasa avaranam sutra speaks about the even more vast potentiality of pranayama, it almost removes everything that comes in the way of self-realisation. The Upanishads speak about pranayama as the highest disclipline. By practicing it, one practically abolishes every malevolent sense, like illusion, ignorance, yearning, or hallucination.

tatah from that, then
ksiyate destroyed, dissolved
prakasa light avaranam covering

Pranayama removes the veil covering the light of knowledge and harbingers the dawn of wisdom.

Its practice eliminates illusion, comprising ignorance, desire and delusion, which overcloud the intelligence; and permits the inner light of wisdom to shine. As the breeze diffuses the clouds that blanket the sun, pranayama blows away the clouds that screen the light of the intelligence.

In the Yoga Chudamani Upanisad, it stated that there is no discipline higher than pranayama. It is named as an enlivened knowledge (mahavidya), a royal road to well being, freedom and rapture.