Dehāgni (bodily fire or battery of energy) is one of the fundamental components in the origination of sound, combined with air
"there? in the beginning on account of the combination of the dehāgni (lit.
bodily fire, battery of energy) and air, the sound propelled by the effort of the
puruşa s (ātman)"
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TRANSLATION
The letter 'na' is spoken of as prana (air) and the letter 'da' is known as
fire; this is spoken of by me as the meaning of the dual<sup>15</sup> verbal component
(pada) of nāda.(20)
This (word) nāda is (derived) from the dhātu (root) nadati (to make
inarticulate sound) and it is fivefold viz. sūksma 16 (subtle), atisūksma (very
subtle), vyakta (distinct) avyakta (indistinct) and kṛtrima (artificial). (21)
The sūksma (subtle) nāda dwells in the guhā 17 (lit. cave, secret place) the
atisūksma (very subtle) one in the heart, the distinct one in the throat, the
indistinct one in the tālu (lit. palate, but here cerebrum) and the artificial one
in the region of the mouth; thus should the fivefold (nāda) be known by the
wise. (22, 23ab)
Thus I have spoken about the beautiful origin of nāda. (23 cd)
Thus ends the origin of nada.
III (The section on sruti)
[The definition of fruti and its numeration]
Now I shall speak of the ascertainment of śrutis; from the root 'śru' meaning
hearing, with the suffix 'ktin'; the word 'sruti' should be formed
(grammatically) by those who are knowledgeable in the 'word' (grammar), (this
is) sādhana (formation) according to 'karman'ı (object). (24)
(Anu. 1)
That which is heard (is known as) śruti. That is one or many. Out of (these
two possibilities, the first one) is that śruti is only one. That is (explained) thus
— there? in the beginning on account of the combination of the dehāgni (lit.
bodily fire, battery of energy) and air, the sound propelled by the effort of the
puruşa s (ātman), attacking the ākāśā (space) above the navel, ascending in
many ways, in steps of a ladder like smoke, according to the will of the air,
appears to be different by way of being composed of four śrutis etc. through
being comprised of the inherent pratyaya (assured consciousness) of filling up
(with air). This is my opinion.