Mahabharata 12.155.12

तपःपरायणाः सर्वे सिध्यन्ति तपसा च तेइत्येवं तपसा देवा महत्त्वं चाप्यवाप्नुवन्

tapaḥparāyaṇāḥ sarve sidhyanti tapasā ca teityevaṃ tapasā devā mahattvaṃ cāpyavāpnuvan

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