न जायते म्रियते वा कदाचि-
न्नायं भूत्वा भविता वा न भूयः ।
अजो नित्यः शाश्वतोऽयं पुराणो-
न हन्यते हन्यमाने शरीरे ।। २-२० ।।

na jāyate mriyate vā kadācin-
nāyaṁ bhūtvā bhavitā vā na bhūyaḥ |
ajo nityaḥ śāśvato’yaṁ purāṇo-
na hanyate hanyamāne śarīre || 2.20 ||

This inner presence, the Soul, is not born, nor does it ever die. After having been present, it will not cease to be either. It is unborn, ever present, permanent, most ancient. When the body is killed, it is not.

Note: This is the crux of the whole sangkhya exposition. Through rational enquiry and introspection, it unearths the singular, all-fold presence, which always present, does not become extinct at all. To grasp and realize it is the key for fulfilment in human life.