Mahabharata 12.292.46
असत्त्वं सत्त्वमात्मानमतत्त्वं तत्त्वमात्मनःअमृत्युर्मृत्युमात्मानमचरश्चरमात्मनः
asattvaṃ sattvamātmānamatattvaṃ tattvamātmanaḥamṛtyurmṛtyumātmānamacaraścaramātmanaḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book