Chapter 2 · verse 20 · gita.yoga.org

Bhagavad Gita 2.20

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

It is not born, nor does it ever die; after having been, it again does not cease to be; unborn, eternal, changeless, and ancient, it is not killed when the body is killed.