Daśagrīva-boonāvaraṇa, Viṣṇv-avatāra-niyoga, Vānara-sahāya-janana, Mantharā-nirmāṇa
तपसो हि परं नास्ति तपसा विन्दते महत्
tapaso hi paraṃ nāsti tapasā vindate mahat
तपसो हि परं नास्ति तपसा विन्दते महत्॥
वैशम्पायन उवाच
The verse asserts the supremacy of tapas—disciplined austerity and self-restraint—as the highest means of moral and spiritual elevation, by which one gains ‘mahat’, true greatness or a great attainment.
In Vaiśampāyana’s narration, this line functions as a doctrinal emphasis within the Vana Parva context, underscoring that sustained ascetic effort is a paramount path to achieving extraordinary results and inner excellence.