न हि कश्चित्क्षणमपि जातु तिष्ठत्यकर्मकृत्। कार्यते ह्यवशः कर्म सर्वः प्रकृतिजैर्गुणैः॥
na hi kashchit kshanam api jatu tishthaty akarma-krit karyate hy avashah karma sarvah prakriti-jair gunaih
Translation
No one can remain without action even for a moment. Everyone is helplessly driven to act by the qualities born of material nature.
Commentary
Action is unavoidable — even breathing, thinking, and digesting are actions. Since total inaction is impossible, the question is not whether to act but how to act. This makes Arjuna's desire to not fight impractical.