Bhagavatapurana 3.9.30

3.9.30

bhūyas tvaṃ tapa ātiṣṭha vidyāṃ caiva mad-āśrayām /
tābhyām antar-hṛdi brahman lokān drakṣyasy apāvṛtān //

30. O Brahma, again perform Tapas and be engaged in meditation on Me, and by these two means you will see in thy mind (the plan of) all the worlds unfolded to thy view.