Bhagavad Gita · 2.17

अविनाशि तु तद्विद्धि येन सर्वमिदं ततम्।विनाशमव्ययस्यास्य न कश्चित्कर्तुमर्हति॥

avināśhi tu tad viddhi yena sarvam idaṁ tatam vināśham avyayasyāsya na kaśhchit kartum arhati

Know that which pervades the entire body to be indestructible. No one can cause the destruction of this imperishable soul.

— Bhagavad Gita 2.17

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)