Mahabharata 12.232.33

अजं पुराणमजरं सनातनं; यदिन्द्रियैरुपलभते नरोऽचलःअणोरणीयो महतो महत्तरं; तदात्मना पश्यति युक्त आत्मवान्

ajaṃ purāṇamajaraṃ sanātanaṃ; yadindriyairupalabhate naro'calaḥaṇoraṇīyo mahato mahattaraṃ; tadātmanā paśyati yukta ātmavān

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