(Then the swan said) ‘The madgu will tell you about another foot of Brahman.’ The next day Satyakāma collected the cows and drove them towards his teacher’s house. At dusk they arrived at a place (where they halted for the night). Having confined the cows and collected some fuel, he lit a fire and sat down just behind it facing east.
The madgu came flying to him and said, ‘O Satyakāma.’ Satyakāma replied, ‘Yes, lord’.
(The madgu said) ‘O Somya, let me tell you about one foot of Brahman.’ (Satyakāma replied) ‘Yes, lord, please tell me.’ (The madgu) said to him: ‘Prāṇa is one part, the eyes are another part, the ears are a third part, and the mind is a fourth part. O Somya, these are the four parts that make up a foot of Brahman. This foot is named Āyatanavān, the Support’.
‘He who knows this foot of Brahman, which has four parts and is known as “the Support,” and worships it as such becomes a support (to others) in this world. He who knows this foot of Brahman, which has four parts and is known as “the Support,” and worships it as such attains worlds which are spacious’.