Chapter 2 · The Yoga of Knowledge · Krishna said
Bhagavad Gita 2.36 — Mockery of enemies
अवाच्यवादांश्च बहून्वदिष्यन्ति तवाहिताः। निन्दन्तस्तव सामर्थ्यं ततो दुःखतरं नु किम् ॥
avācyavādāṃśca bahūnvadiṣyanti tavāhitāḥ | nindantastava sāmarthyaṃ tato duḥkhataraṃ nu kim ||
Meaning
Your enemies will say many unspeakable things about you and mock your strength. What could be more painful than that?