Mahabharata 1.187.30

एष धर्मो ध्रुवो राजंश्चरैनमविचारयन्मा च तेऽत्र विशङ्का भूत्कथंचिदपि पार्थिव

eṣa dharmo dhruvo rājaṃścarainamavicārayanmā ca te'tra viśaṅkā bhūtkathaṃcidapi pārthiva

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