प्रकृतिं पुरुषं चैव विद्ध्यानादी उभावपि ।
विकारांश्च गुणांश्चैव विद्धि प्रकृतिसम्भवान् ।। १३.१९ ।।

prakṛtiṁ puruṣaṁ caiva viddhy-anādī ubhāv-api |
vikārāṁś-ca guṇāṁś-caiva viddhi prakṛti-sambhavān || 13.19 ||

Prakrti and Purusha

Prakrti and purusha, says Krishna, are both beginningless. Of the two, prakrti is the one that instruments and embodies all the changes or transformations through cause and effect chain (13.19). All changes caused within prakrti are material and energial in content. Being so, they themselves have no power or potential to give rise to any kind of living experience or response.