Shiva Purana

siva.sh/siva-purana/uma-samhita/12/38

सनत्कुमार उवाच ।। प्रवक्ष्यामि तपोऽध्यायं सर्व कामार्थसाधकम् ।। सुदुश्चरं द्विजातीनां तन्मे निगदतः शृणु ।। ३८ ।।

sanskrit

Sanatkumāra said:— I shall explain the section on penance (tapas) which is the means of achieving all the objects of desire, very difficult to be performed even by brahmins. Please listen even as I explain.

english translation

sanatkumAra uvAca || pravakSyAmi tapo'dhyAyaM sarva kAmArthasAdhakam || suduzcaraM dvijAtInAM tanme nigadataH zRNu || 38 ||

hk transliteration by Sanscript