Mahabharata 12.72.27
तस्मादेवं परं धर्मं मन्यन्ते धर्मकोविदाःयद्राजा रक्षणे युक्तो भूतेषु कुरुते दयाम्
tasmādevaṃ paraṃ dharmaṃ manyante dharmakovidāḥyadrājā rakṣaṇe yukto bhūteṣu kurute dayām
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book