कार्यकारणकर्तृत्वे हेतु: प्रकृतिरुच्यते | पुरुष: सुखदु:खानां भोक्तृत्वे हेतुरुच्यते ॥21॥
kārya-kāraṇa-kartṛitve hetuḥ prakṛitir uchyate puruṣhaḥ sukha-duḥkhānāṁ bhoktṛitve hetur uchyate
kārya—effect; kāraṇa—cause; kartṛitve—in the matter of creation; hetuḥ—the medium; prakṛitiḥ—the material energy; uchyate—is said to be; puruṣhaḥ—the individual soul; sukha-duḥkhānām—of happiness and distress; bhoktṛitve—in experiencing; hetuḥ—is responsible; uchyate—is said to be
With regard to the source of body and organs, Nature is said to be the cause. The soul is the cause so far as enjoyer-ship of happiness and sorrow is concerned.