सर्वघाति मया मुक्तमस्त्रं परमदारुणम् | केनेमौ मर्त्यधर्माणौ नावधीत् केशवार्जुनौ
sarvaghāti mayā muktam astraṁ paramadāruṇam | kenemau martyadharmāṇau nāvadhīt keśavārjunau
Sañjaya said: “I released a supremely dreadful weapon, capable of destroying all. Yet how is it that these two—Keśava and Arjuna—though subject to mortal conditions, were not slain by it?”
संजय उवाच
Even the most devastating humanly-deployed force (astra) does not operate as an absolute; outcomes are bounded by dharma, destiny, and—here especially—the extraordinary protection surrounding Kṛṣṇa and Arjuna. The verse highlights the ethical and metaphysical limits of violence: power alone does not guarantee rightful or final results.
Sañjaya reports that a terrifying, all-destroying weapon was released, yet Kṛṣṇa (Keśava) and Arjuna survived. He expresses astonishment and implicitly points to their exceptional status and protection amid the catastrophic warfare of the Droṇa Parva.