|Chapter 1, Verse 45|

अहो बत महत्पापं कर्तुं व्यवसिता वयम्।

यद्राज्यसुखलोभेन हन्तुं स्वजनमुद्यताः।।1.45।।

ॐ

Transliteration / Meaning

aho bata mahat pāpaṁ kartuṁ vyavasitā vayam
yad rājya-sukha-lobhena hantuṁ sva-janam udyatāḥ

Translation

Better for me if the sons of Dhritarashtra, weapons in hand, were to kill me unarmed and unresisting on the battlefield.

Purport by Srila Prabhupada

It is the custom -- according to kshatriya fighting principles -- that an unarmed and unwilling foe should not be attacked. Arjuna, however, decided that even if attacked by the enemy in such an awkward position, he would not fight. He did not consider how much the other party was bent upon fighting. All these symptoms are due to soft-heartedness resulting from his being a great devotee of the Lord.