देही नित्यमवध्योऽयं देहे सर्वस्य भारत। तस्मात्सर्वाणि भूतानि न त्वं शोचितुमर्हसि॥
dehi nityam avadhyo'yam dehe sarvasya bharata tasmat sarvani bhutani na tvam shochitum arhasi
Translation
O Bharata, the soul dwelling in every body can never be slain. Therefore, you should not grieve for any living being.
Commentary
Krishna concludes the soul-based argument: since the soul in every body is indestructible, grief for any being is based on ignorance. This universalizes the teaching beyond just Arjuna's battlefield situation.
soulwisdomknowledge