BG - 2.26

अथ चैनं नित्यजातं नित्यं वा मन्यसे मृतम्। तथापि त्वं महाबाहो नैवं शोचितुमर्हसि।।2.26।।

atha chainaṁ nitya-jātaṁ nityaṁ vā manyase mṛitam tathāpi tvaṁ mahā-bāho naivaṁ śhochitum arhasi

• atha - if, however
• cha - and
• enam - this soul
• nitya-jātam - taking constant birth
• nityam - always
• vā - or
• manyase - you think
• mṛitam - dead
• tathā api - even then
• tvam - you
• mahā-bāho - mighty-armed one, Arjun
• na - not
• evam - like this
• śhochitum - grieve
• arhasi - befitting

Translation

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

Commentary