O Brahmā, situate yourself in penance and meditation and follow the principles of knowledge to receive My favor. By these actions you will be able to understand everything from within your heart.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
भूयस्त्वं तप आतिष्ठ विद्यां चैव मदाश्रयाम् । ताभ्यामन्तर्हृदि ब्रह्मन् लोकान् द्रक्ष्यस्यपावृतान्
bhūyastvaṃ tapa ātiṣṭha vidyāṃ caiva madāśrayām | tābhyāmantarhṛdi brahman lokān drakṣyasyapāvṛtān
SB 3.9.30