Bhrigu Varuni went to his father Varuna, saying: 'Sir, teach me Brahman.' He told him this, viz. Food, breath, the eye, the ear, mind, speech. Then he said again to him: 'That from whence these beings are born, that by which, when born, they live, that into which they enter at their death, try to know that. That is Brahman.' He performed penance. Having performed penance—

In plain words: Bhrigu asks his father Varuna to teach him about Brahman. Varuna names food, breath, sight, hearing, mind and speech. Then he says: find out what all beings are born from, live by, and return to at death. That is Brahman. Bhrigu goes off to practise discipline and think deeply.