Bhagavad Gita 2.26 Chapter 2, Verse 26

अथ चैनं नित्यजातं नित्यं वा मन्यसे मृतम् ।
तथापि त्वं महाबाहो नैवं शोचितुमर्हसि ॥२.२६॥

atha cainaṃ nityajātaṃ nityaṃ vā manyase mṛtam
tathāpi tvaṃ mahābāho naivaṃ śocitumarhasi

Meaning

And even if you think the soul is constantly born and constantly dies, O mighty-armed, you still should not grieve like this.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 2.26 (Chapter 2, The Yoga of Knowledge (Sankhya Yoga), Verse 26)