Here is the Sanskrit anuvad, Hindi anuvad, and English translation of Moksha-Sanyasa Yoga Chapter 18, Verse 18.59.
Sanskrit
यदहंकारमाश्रित्य न योत्स्य इति मन्यसे । मिथ्यैष व्यवसायस्ते प्रकृतिस्त्वां नियोक्ष्यति ॥ १८.५९ ॥
Hindi
जो तू अहंकार का आश्रय लेकर यह मान रहा है कि ‘मैं युद्ध नहीं करूँगा’ तेरा यह निश्चय मिथ्या है ; क्योंकि तेरा स्वभाव तुझे जबर्दस्ती युद्ध में लगा देगा ।
English
If you do not fight the battle which you are destined to fight and you disobey My instructions, I shall consider this act to be one of extreme vanity and misguidance. However, O Son of Kunti, you will be impelled into warfare with your enemies by your very own nature.