Mahabharata 3.89.18
तपसा तु त्वमात्मानं भ्रातृभिः सह योजयतपसो हि परं नास्ति तपसा विन्दते महत्
tapasā tu tvamātmānaṃ bhrātṛbhiḥ saha yojayatapaso hi paraṃ nāsti tapasā vindate mahat
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book