Bhagavad Gita 2.33

अथ चैत्त्वमिमं धर्म्यं संग्रामं न करिष्यसि।ततः स्वधर्मं कीर्तिं च हित्वा पापमवाप्स्यसि॥

atha caittvamimaṃ dharmyaṃ saṃgrāmaṃ na kariṣyasi |tataḥ svadharmaṃ kīrtiṃ ca hitvā pāpamavāpsyasi ||

But if you will not fight this righteous war, then having abandoned your own duty and reputation, you will incur sin.

Refuse to fight in this righteous cause, and you will be a traitor, losing fame, incurring only sin.

Our plain-language meaning of this verse is waiting for scholar review.