Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 20
Sanskrit:
मैत्रेय उवाचएवमात्मभुवादिष्ट: परिक्रम्य गिरां पतिम् ।बाढमित्यमुमामन्त्र्य विवेश तपसे वनम् ॥ २० ॥
ITRANS:
maitreya uvācaevam ātmabhuvādiṣṭaḥparikramya girāṁ patimbāḍham ity amum āmantryaviveśa tapase vanam
Translation:
Śrī Maitreya said: Thus Rudra, having been ordered by Brahmā, circumambulated his father, the master of the Vedas. Addressing him with words of assent, he entered the forest to perform austere penances.