Mahabharata 13.23.19
भीष्म उवाच · bhīṣma uvāca
अहिंसा सत्यमक्रोध आनृशंस्यं दमस्तथाआर्जवं चैव राजेन्द्र निश्चितं धर्मलक्षणम्
ahiṃsā satyamakrodha ānṛśaṃsyaṃ damastathāārjavaṃ caiva rājendra niścitaṃ dharmalakṣaṇam
Our plain-language meaning of this verse is waiting for scholar review.