Resources of the Himalayan Yoga Tradition

Yoga Sutras of Patanjali, Chapter 1, Sutra 16

"That dispassion is of the higher kind, transcendent, supreme, when it is the freedom from all craving for the attributes, gunas, arising through the realization of the spiritual self, purusha." Swami Veda Bharati

Explanation: As was stated previously, when the mind becomes still, the Seer rests in his own nature. But so long as the mind is attached to nature, the stillness of mind, though attained, is broken again as the mind craves. As a practitioner practices vairagya, his/her non-attachment slowly extends to more things. When the practice of dispassion/non-attachment extends all the way to the most subtle building-blocks of nature (called gunas), so that the practitioner does not crave even them, that is called paravairagya, supreme dispassion. It is this supreme non-attachment that allows the mind to finally remain still without seeking the satisfaction of cravings. This is the culmination of knowledge and the entrance to liberation.

A further very good explanation is given Here.

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