Mahabharata 9.56.22

दक्षिणं मण्डलं राजन्धार्तराष्ट्रोऽभ्यवर्ततसव्यं तु मण्डलं तत्र भीमसेनोऽभ्यवर्तत

dakṣiṇaṃ maṇḍalaṃ rājandhārtarāṣṭro'bhyavartatasavyaṃ tu maṇḍalaṃ tatra bhīmaseno'bhyavartata

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