Mahabharata 13.109.50
मासादूर्ध्वं नरव्याघ्र नोपवासो विधीयतेविधिं त्वनशनस्याहुः पार्थ धर्मविदो जनाः
māsādūrdhvaṃ naravyāghra nopavāso vidhīyatevidhiṃ tvanaśanasyāhuḥ pārtha dharmavido janāḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book