Bhagavad Gita 2.26

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

atha cainaṃ nityajātaṃ nityaṃ vā manyase mṛtamtathāpi tvaṃ mahābāho naivaṃ śocitumarhasi

But even if thou thinkest of It as constantly being born and constantly dying, even then, O mighty-armed one, thou shouldst not grieve.

गीता