Mahabharata 12.262.27
तेषामपेततृष्णानां निर्णिक्तानां शुभात्मनाम्चतुर्थ औपनिषदो धर्मः साधारणः स्मृतः
teṣāmapetatṛṣṇānāṃ nirṇiktānāṃ śubhātmanāmcaturtha aupaniṣado dharmaḥ sādhāraṇaḥ smṛtaḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book