Mahabharata 3.83.60
तत्र कूपो महाराज विश्रुतो भरतर्षभसमुद्रास्तत्र चत्वारो निवसन्ति युधिष्ठिर
tatra kūpo mahārāja viśruto bharatarṣabhasamudrāstatra catvāro nivasanti yudhiṣṭhira
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book