Mahabharata 3.217.14

इत्येतद्विविधाकारं वृत्तं शुक्लस्य पञ्चमीम्तत्र युद्धं महाघोरं वृत्तं षष्ठ्यां जनाधिप

ityetadvividhākāraṃ vṛttaṃ śuklasya pañcamīmtatra yuddhaṃ mahāghoraṃ vṛttaṃ ṣaṣṭhyāṃ janādhipa

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