Mahabharata · Chapter 12.159
sarvametattapomūlaṃ kavayaḥ paricakṣate /
na hyataptatapā mūḍhaḥ kriyāphalamavāpnute //
prajāpatiridaṃ sarvaṃ tapasaivāsṛjatprabhuḥ /
tathaiva vedānṛpayastapasā pratipedire //
tapasaiva sasarjānnaṃ phalamūlāni yāni ca /
trīm̐llokāṃstapasā siddhāḥ paśyanti susamāhitāḥ //
auṣadhānyagadādīni tistro vidyāśca saṃskṛtāḥ /
taṣasaiva hi siddhyanti tapomūlaṃ hi sādhanam //
yaddurāpaṃ durārādhyaṃ durādharṣaṃ durutsaham / tatsarvaṃ tapasā śakyaṃ tapo hi duratikramam /
aiśvaryamṛṣayaḥ prāptāstapasaiva na saṃśayaḥ //
surāpo'sammatādāyī bhrūṇahā gurutalpagaḥ /
tapasaiva sutaptena naraḥ pāpātpramucyate //
tapaso bahurūpasya taistairdvāraiḥ pravartataḥ /
nivṛttyā vartamānasya tapo nānaśanātparam //
ahiṃsā satyavacanaṃ dānamindriyanigrahaḥ /
etebhyo hi mahārāja tapo nānaśanātparam //
na duṣkarataraṃ dānānnāti mātaramāśramaḥ /
traividyebhyaḥ paraṃ nāsti sannyāsānnāparaṃ tapaḥ //
indriyāṇīha rakṣanti viprarṣipitṛdevatāḥ /
tasmādarthe ca dharme ca tapo nānaśanātparam //
ṛṣayaḥ pitaro devā manuṣyā mṛgapakṣiṇaḥ /
yāni cānyāni bhūtāni syāvarāṇi carāṇi ca //
tapaḥ parāyaṇāḥ sarve sidhyanti tapasā ca te /
ityevaṃ tapasā devā mahattvaṃ pratipedire //
imānīṣṭavibhāgāni phalāni tapasaḥ sadā /
tapasā śakyate prāpnuṃ devatvamapi niścayaḥ //
Original text: Mahābhārata (southern recension) · Edition: Śrīman Mahābhāratam, ed. T. R. Krishnacharya and T. R. Vyasacharya, Nirnaya Sagar Press, Bombay 1906–1910; e-text by SARIT (Shrinivasa Varakhedi and others) · SARIT: Search and Retrieval of Indic Texts · SARIT (e-text) via Internet Archive · CC BY-SA 3.0