Mahabharata 12.15.21

नकुलो मूषकानत्ति बिडालो नकुलं तथाबिडालमत्ति श्वा राजञ्श्वानं व्यालमृगस्तथा

nakulo mūṣakānatti biḍālo nakulaṃ tathābiḍālamatti śvā rājañśvānaṃ vyālamṛgastathā

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