In the beginning of creation, that very Lord took the form of four brahmana children: Sanak, Sanandan, Sanatan and Sanatkumar, and performed extreme austerities || 6 ||
English translation and commentary of Srimad Bhagavatam. Adapted from the Hindi commentary of Srimad Bhagavatam by Maharajshri Shri Akhandanand Saraswati Maharaj