Sanskrit
अन्तवन्त इमे देहा नित्यस्योक्ताः शरीरिणः । अनाशिनोऽप्रमेयस्य तस्माद्युध्यस्व भारत ॥
antavanta ime dehā nityasyoktāḥ śarīriṇaḥ anāśino'prameyasya tasmād yudhyasva bhārata
Translation
These bodies of the embodied One, who is eternal, indestructible and immeasurable, are known as finite. Therefore fight, O Bhârata.
Annie Besant · The Bhagavad-Gita, translated by Annie Besant (4th ed., 1922) — Wikisource · Public Domain
Explanation
The argument turns back toward action for the first time since verse 11’s rebuke: bodies, unlike the self, are finite — so fight. It’s worth noticing the logical shape here: this isn’t “fighting doesn’t matter,” it’s “fighting doesn’t do what you think it does,” which is a very different, narrower claim.
Concepts