Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Sankhya Yoga Chapter 2, Verse 2.30.
Sanskrit
देही नित्यमवध्योऽयं देहे सर्वस्य भारत । तस्मात्सर्वाणि भूतानि न त्वं शोचितुमर्हसि ॥ २.३० ॥
Hindi
हे अर्जुन ! यह आत्मा सबके शरीरोंमें सदा ही अवध्य है। इस कारण सम्पूर्ण प्राणियों के लिये शोक करनेके योग्य नहीं है|
English
ARJUNA, although the body can be slain, the Soul cannot. The Soul of a being lives on forever, therefor it is not necessary to grieve over anybody’s death because the most important part of them never dies at all, and that is, their Souls.