Mahabharata 12.213.4

दमस्तेजो वर्धयति पवित्रं दम उच्यतेविपाप्मा निर्भयो दान्तः पुरुषो विन्दते महत्

damastejo vardhayati pavitraṃ dama ucyatevipāpmā nirbhayo dāntaḥ puruṣo vindate mahat

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