Existence of prakṛti, existence and plurality of puruṣa

SK 15

bhedānāṃ parimāṇāt samanvayāc chaktitaḥ pravṛtteś ca kāraṇa-kārya-vibhāgād a-vibhāgād vaiśva-rūpasya.

SK 16

kāraṇam asty avyaktaṃ pravartate tri-guṇataḥ samudayāc ca pariṇāmataḥ salilavat prati-prati-guṇāśraya-viśeṣāt.

SK 17

saṃghāta-parārthatvāt tri-guṇādi-viparyayād adhiṣṭhānāt puruṣo ’sti bhoktṛ-bhāvāt kaivalyārthaṃ pravṛtteś ca.

SK 18

janana-maraṇa-karaṇānāṃ prati-niyamād a-yugapat pravṛtteś ca puruṣa-bahutvaṃ siddhaṃ trai-guṇya-viparyayāc caiva.

SK 19

tasmāc ca viparyāsāt siddhaṃ sākṣitvam asya puruṣasya kaivalyam mādhya-sthyaṃ draṣṭṛtvam a-kartṛ-bhāvaś ca.

SK 20

tasmāt tat-saṃyogād a-cetanaṃ cetanāvad iva liṅgaṃ guṇa-kartṛtve ca tathā kartā iva bhavaty udāsīnaḥ.

SK 21

puruṣasya darśanārthaṃ kaivalyārthaṃ tathā pradhānasya paṅgv-andhavad ubhayor api saṃyogas tat-kṛtaḥ sargaḥ.