Śri bhagavāna uvāca:
Tvayāhaṁ toṣitaḥ samyagveda-garbha sisṛkṣayā
Ciraṁ bhṛtena tapasā dustoṣaḥ kūṭa-yoginām
O Brahma, you are full of the knowledge of the Vedas. I am deeply satisfied with your intense penance performed for a very long period of time with the desire for creation.
Pratyādiṣṭaṁ mayā tatra tvayi karma-vimohite
Tapo me hṛdayaṁ sākṣād ātmāhaṁ tapaso ‘nagha
O sinless Brahma! At that point of time you entertained many uncertainties with respect to method of creation. I commanded you to undertake penance. Penance (tapas) is my heart. This penance is supremely dear to me. Penance is my form.
Sṛjāmi tapasaivedaṁ grasāmi tapasā punaḥ
Bibharmi tapasā viśvaṁ vīryaṁ me duścaraṁ tapaḥ
I create this entire universe purely through penance. Again through the medium of penance I absorb it back. It is through penance that I support this creation. Therefore this penance, which is performed with difficulty, is my energy.
from Srimad Bhagavatam – Day 87(Translations of Pujya Sri Ganapathy Sachchidananda Swamiji’s daily explanation of Srimad Bhagavatam on ETV from December 2015 onwards are compiled by Parimala Eshwarla)