शाश्च॒तं धर्ममुत्सज्य गुरु: शस्त्रेण घातित: । पुत्रवत्सल गुरुदेव बेटेके शोकमें मग्न होकर युद्धसे विमुख हो गये थे। उस अवस्थामें आपने सनातनधर्मकी अवहेलना करके उन्हें शस्त्रसे मरवा डाला
śāśvataṃ dharmam utsṛjya guruḥ śastreṇa ghātitaḥ |
अर्जुन उवाच—शाश्वतं धर्ममुत्सृज्य गुरुः शस्त्रेण घातितः। पुत्रवत्सलो गुरुदेवः पुत्रशोकेन मोहितो युद्धात् निवृत्तः; तस्मिन्नवस्थायां सनातनधर्मं अवज्ञाय त्वया शस्त्रैर्निहतः।
अजुन उवाच
Even in war, one must not abandon śāśvata-dharma—timeless ethical restraints. The verse frames the killing of a revered guru, especially when he is grief-stricken and withdrawn from combat, as a grave moral lapse and a violation of righteous conduct.
Arjuna is reproaching the act of having the Guru (Droṇa) killed by weapons, emphasizing that Droṇa—overcome by sorrow and affection for his son—had become disengaged from fighting, and that exploiting this condition to bring about his death amounted to setting aside dharma.