Mahabharata 1.97.4

यथा कर्म शुभं कृत्वा स्वर्गोपगमनं ध्रुवम्यथा चायुर्ध्रुवं सत्ये त्वयि धर्मस्तथा ध्रुवः

yathā karma śubhaṃ kṛtvā svargopagamanaṃ dhruvamyathā cāyurdhruvaṃ satye tvayi dharmastathā dhruvaḥ

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