“When Lord Brahma was perplexed about how to construct the material manifestations in the universe and went down within the water to find out the means and the source of his lotus seat, he heard the word tapa vibrated twice. Taking the path of tapa is the second birth of the desiring disciple. The word upashrinot is very significant. It is similar to upanayana, or bringing the disciple nearer to the spiritual master for the path of tapa. So Brahmaji was thus initiated by Lord Krishna, and this fact is corroborated by Brahmaji himself in his book the Brahma-samhita.” (Shrila Prabhupada, Shrimad Bhagavatam, 2.9.6 Purport)