Bhagavad Gita Verse 2.26

किन्तु यदि तू इस आत्माको सदा जन्मनेवाला तू तथा सदा मरनेवाला मानता हो, तो भी हे महाबाहो ! तू इस प्रकार शोक करनेको योग्य नहीं है|

Even if you incorrectly believe. O ARJUNA, that the Soul is constantly taking birth and dying, you should still not become upset and filled with grief and sadness.