Bhagavad Gita 1.37
Arjuna concludes that killing his own kinsmen cannot lead to happiness.
तस्मान्नार्हा वयं हन्तुं धार्तराष्ट्रान्स्वबान्धवान्।
स्वजनं हि कथं हत्वा सुखिनः स्याम माधव॥
tasmān nārhā vayaṃ hantuṃ dhārtarāṣṭrān sa-bāndhavān
sva-janaṃ hi kathaṃ hatvā sukhinaḥ syāma mādhava
Translation
So we should not kill the sons of Dhritarashtra, our own kinsmen. How could we be happy, Madhava, after killing our own people?
Hindi
इसलिए हमें अपने बंधु धृतराष्ट्र-पुत्रों को नहीं मारना चाहिए। हे माधव, अपने ही स्वजनों को मारकर हम कैसे सुखी होंगे?
Commentary
The verse draws the conclusion of the last few: since happiness cannot come from killing kin, the war should not be fought. Arjuna's logic is clear and humane. What he has not yet asked is whether duty might demand more than happiness. That question will come from Krishna. First, Arjuna considers the enemy in 1.38.
