hirobhutani dharayan nityam
vyavayam kurute is the order of the words. The sense is this: in this
spot is seated Brahman; there Ida and Pingala meet; and there also is
Vayu which urges the understanding and upholds all living creatures.

50. Yatra is not to be taken as a locative here. It is equivalent to
yatah or for which.

51. Tasmin is taken, by Nilakantha as Apana sahite Prane.

52. Utkarshena anayati, hence Udana, says Nilakantha. The sense of the
whole passage seems to be this. Worldly life is regulated by the
life-breaths. These are attached to the Soul and lead to its individual
manifestations. Udana controls all the breaths. Udana is controlled by
penance. It is penance then that destroys the round of rebirths and leads
to absorption into Brahman.

53. The meaning seems to be this: they who renounce sensuous objects can
create them when they like. One casting off smell that has earth for its
object can create earth when he likes.

54. What is stated in this passage is, shortly, this: the ear, etc, are
the Hotris or sacrificing priests who are to pour libations on the
sacrificial fire. The perceptions and functions of those organs
constitute the Havi or libations that are to be poured. The points, wind,
etc, are the Agni or sacred fires on which they are to be poured. These
statements are recapitulated in verse 5. The objects of the senses, of
the same as those in verse 3, are the fuel, previously described as Havi
or libations, which are to be burnt off by being cast into the fires.

55. The Hridaya or heart is the Garhapatya fire. From it is produced
another fire, the Ahavaniya, viz., the mind. 'The heart was pierced. From
the heart arose mind, for the mind arose Chandramas,' is the declaration
of the Sruti cited by Nilakantha. The Ahavaniya fire or mind is the
mouth. Asyam ahavaniya is the Sruti. Annamayam hi Somya manas, apomayah
pranah, tejomayi vak is the Sruti that bears upon this. Food or fire,
poured into the mouth develops into speech or word. Vachaspati implies
the Veda or word. First arises the word, the mind sets itself upon it,
desirous of creation. This corresponds with the Mosaic Genesis.--'God
said, let there be light, and there was light.' The word was first.

56. The last question seems to be this: in dreamless slumber, the mind
disappears totally. If it is the mind upon which Prana rests, why does
not Prana also disappear? It is seen to separate itself from mind, for it
continues to e