Mahabharata 12.94.18

रक्षितात्मा तु यो राजा रक्ष्यान्यश्चानुरक्षतिप्रजाश्च तस्य वर्धन्ते ध्रुवं च महदश्नुते

rakṣitātmā tu yo rājā rakṣyānyaścānurakṣatiprajāśca tasya vardhante dhruvaṃ ca mahadaśnute

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