Mahabharata 8.27.79
मद्रकेषु विलुप्तेषु प्रख्याताशुभकर्मसुनापि वैरं न सौहार्दं मद्रकेषु समाचरेत्
madrakeṣu vilupteṣu prakhyātāśubhakarmasunāpi vairaṃ na sauhārdaṃ madrakeṣu samācaret
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book