Bhagavad-gītā 2.30
BG 2.30
Open the full passageदेही नित्यमवध्योऽयं देहे सर्वस्य भारत । तस्मात्सर्वाणि भूतानि न त्वं शोचितुमर्हसि ॥३०॥
Sanskrit
dehī nityam avadhyo 'yaṁ dehe sarvasya bhārata tasmāt sarvāṇi bhūtāni na tvaṁ śocitum arhasi
Translation
O descendant of Bharata, he who dwells in the body can never be slain. Therefore you need not grieve for any living being.