In the last suutra, IV 34, Patañjali seems to elaborate upon why prakRti is "destroyed" (naSTa) for a kRtaartha ([someone with a] done-purpose [kRta-artha]):
पुरुषार्थशून्यानां गुणानां प्रतिप्रसवः कैवल्यं स्वरूपप्रतिष्ठा वा चितिशक्तिरिति॥३४॥ puruṣa-artha-śūnyānāṁ guṇānāṁ-pratiprasavaḥ kaivalyaṁ svarūpa-pratiṣṭhā vā citiśaktir iti ॥34॥ [typo, also in the devanaagarii : should be citishakter iti - card] [HA]: The State Of The Self In Itself Or Liberation Is Realised When The Gunas (Having Provided For The Experience And Liberation Of Purusa) Are Without Any Objective To Fulfill And Disappear Into Their Causal Substance. In Other Words, It Is Absolute Consciousness Established In Its Own Self. [IT]: Kaivalya is the state (of Enlightenment) following re-mergence of the Gunas because of their becoming devoid of the object of the Purusa. In this state the Purusa is established in his Real nature which is pure Consciousness. [VH]: [BM]: [SS]: Thus, the supreme state of Independence manifests while the gunas reabsorb themselves into Prakriti, having no more purpose to serve the Purusha. Or to look from another angle, the power of pure consciousness settles in its own pure nature. [SP]: [33] Since the gunas no longer have any purpose to serve for the Atman, they resolve themselves into Prakriti. This is liberation. The Atman shines forth in its own pristine nature, as pure consciousness. [SV]: [VN 4.33] The resolution in the inverse order of the qualities, berfect of any motive of action for the Purusa, is Kaivalya, or it is the establishment of the power of knowledge in its own nature. -------- So, for instance the "destruction" of tamas or tamo-guNa (in Western physics: Higgs boson[s?]) shows e.g. in the fact that a fully enlightened individual can levitate just by thinking of becoming as light as cotton fibre, or just by deciding to fly?
