Mahabharata 1.1.194

शाश्वतं ब्रह्म परमं ध्रुवं ज्योतिः सनातनम्यस्य दिव्यानि कर्माणि कथयन्ति मनीषिणः

śāśvataṃ brahma paramaṃ dhruvaṃ jyotiḥ sanātanamyasya divyāni karmāṇi kathayanti manīṣiṇaḥ

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