Bhagavad Gītā Chapter 18, Verse 59: Krishna to ArjunaMokṣa-Sannyāsa-Yoga

Bhagavad Gītā 18.59Chapter 18 · Mokṣa-Sannyāsa-Yoga · KrishnaArjuna · anuṣṭubh
यदहङ्कारमाश्रित्य न योत्स्य इति मन्यसे
मिथ्यैष व्यवसायस्ते प्रकृतिस्त्वां नियोक्ष्यति
yadahaṅkāramāśritya na yotsya iti manyase
mithyaiṣa vyavasāyaste prakṛtistvāṃ niyokṣyatyat(5 verses)who, which (relative pronoun, variant of yad); also: to strive, exert (verbal root)i
spokensingle-voice recital; rendered via IndicF5 conditioned on a Sanskrit reference clip
meaning

If you think "I will not fight" and lean on your sense of self to back that up, that resolve is hollow. Your own nature will drive you to battle.