Śānti-parva 168: Śoka-nivṛtti-buddhi (The Cognition that Reduces Grief) and Piṅgalā’s Nairāśya
कामेन युक्ता ऋषयस्तपस्येव समाहिता: । पलाशफलमूलादा वायुभक्षा: सुसंयता:
kāmena yuktā ṛṣayas tapasy eva samāhitāḥ | palāśa-phala-mūlāda vāyu-bhakṣāḥ su-saṃyatāḥ ||
Sages, impelled by desire, became as intent and absorbed as if engaged in austerity. Living on palāśa leaves, fruits, and roots—or even subsisting on air alone—they remained firmly self-restrained.
भीमयेन उवाच