Mahabharata 12.128.17

यथास्य धर्मो न ग्लायेन्नेयाच्छत्रुवशं यथातत्कर्तव्यमिहेत्याहुर्नात्मानमवसादयेत्

yathāsya dharmo na glāyenneyācchatruvaśaṃ yathātatkartavyamihetyāhurnātmānamavasādayet

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