Bhagavad Gita 2.5
Arjuna would rather live by begging than win pleasures stained with his teachers' blood.
गुरूनहत्वा हि महानुभावान्
श्रेयो भोक्तुं भैक्ष्यमपीह लोके।
हत्वार्थकामांस्तु गुरूनिहैव
भुञ्जीय भोगान् रुधिरप्रदिग्धान्॥
gurūn ahatvā hi mahānubhāvān
śreyo bhoktuṃ bhaikṣyam apīha loke
hatvārthakāmāṃs tu gurūn ihaiva
bhuñjīya bhogān rudhirapradigdhān
Translation
Arjuna says he would sooner eat a beggar's food in this world than kill his great-souled teachers. Slay them for gain and desire, and every enjoyment he tasted would be smeared with their blood.
Hindi
अर्जुन कहते हैं कि महान गुरुजनों को मारने से अच्छा है कि वे इसी लोक में भिक्षा का अन्न खाएँ। उन्हें अर्थ और काम के लिए मारकर तो जो भी भोग वे भोगेंगे, वे उनके रक्त से सने होंगे।
Commentary
Here Arjuna weighs a beggar's life against a kingdom bought with the blood of teachers, and chooses the beggar's life. The picture of blood-stained pleasures shows that his objection is moral, not only emotional. He admits in 2.6 that he cannot even tell which outcome is better.
