Bhagwad Gita
Chapter 2, Verse 36
अवाच्यवादांश्च बहून् वदिष्यन्ति तवाहिताः।
निन्दन्तस्तव सामर्थ्यं ततो दुःखतरं नु किम्।।2.36।।
Your enemies will describe you in many unkind words and scorn your ability. What could be more painful for you?