Mahabharata 6.15.33

पार्श्वतः केऽभ्यवर्तन्त गच्छन्तो दुर्गमां गतिम्समूहे के परान्वीरान्प्रत्ययुध्यन्त संजय

pārśvataḥ ke'bhyavartanta gacchanto durgamāṃ gatimsamūhe ke parānvīrānpratyayudhyanta saṃjaya

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