Bhagavad Gita 2.36

Your enemies will spread scandal and mock your courage. Is there anything more humiliating?

अवाच्यवादांश्च बहून् वदिष्यन्ति तवाहिताः।
निन्दन्तस्तव सामर्थ्यं ततो दुःखतरं नु किम्॥

avācyavādāṃśca bahūn vadiṣyanti tavāhitāḥ|
nindantastava sāmarthyaṃ tato duḥkhataraṃ nu kim||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).