Patanjali Yoga Sutra 1.16
Sanskrit Sutra
तत्परं पुरुषख्यातेर्गुणवैतृष्ण्यम्॥१६॥
Swami Vivekananda's translation
That is extreme non-attachment which gives up even the qualities, and comes from the knowledge of (the real nature of) the Purusha.
Chapter link: Yoga Sutra Chapter 1

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