Mahabharata 3.186.33

बहुशून्या जनपदा मृगव्यालावृता दिशःयुगान्ते समनुप्राप्ते वृथा च ब्रह्मचारिणःभोवादिनस्तथा शूद्रा ब्राह्मणाश्चार्यवादिनः

bahuśūnyā janapadā mṛgavyālāvṛtā diśaḥyugānte samanuprāpte vṛthā ca brahmacāriṇaḥbhovādinastathā śūdrā brāhmaṇāścāryavādinaḥ

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