4.24 Brahmarpanam etc.  That is to be offered to the Brahman (list) :  that, the offering of which is in the  Brahman i.e.,  the reentrance of which is only into That, just from which it has originated.  The Brahman (2nd) :  That which is the same as the entire universe what we see - this is that very oblation. Into the Brahman-fire : into the fire which is the same as the Brahman,  the highly tranil  Supreme Consciousness.  By the  Brahman : by one or the other action.  Is poured : is offered  for the augmentation of It's lumination. Hence, a man of  Yoga,  whose Brahman-action of this sort is itself a deep concentration - by him,  the Brahman  alone is [a goal] to be attained i.e., to be realised, not anything else; for there is no other thing.
 
Alternatively [in the verse] the meaning  'by him' brings  in, by implication, the meaning  'by whom'.  So the following  is the alignment  [of words] :  The action,  in which the Brahman-oblation, intended to be an offering to a deity of the Brahman-nature, has been indeed poured into the Brahman-fire  by the sacrificer, identical with the Brahman - that very Brahman-action of this sort is itself a deep contemplaiton, because it is the means to gain the innate nature  of  the Self.  And what is attained by this Brahman-action-contemplation is the very Brahman Itself  and not any other fruit.  Indeed it has been maintained  [by the Lord]  as :
 
          'The way in which  men  resort to Me,
           [in the same way  I favour them]'. (IV, II) 
 
'Those, who have cultivated the nature of performing sacrifice which is nothing but Me, but of the  delimited nature - they attain, therefore, the fruit of similar  [limited]  nature.  This is different  matter.  But, with regard to those  who have realised  the nature  of the sacrifice identical  with Me ( the Supreme Consciousness),  the Unlimited and  complete;  how could they be entertaining a craving for a bit of limited fruit ?'  This is the idea here.
 
Thus, a  top secret is furnished  by this and by the succeeding  verses.  that has been also detailed by us (Ag.) - even though our intelligence is limited - as far as  our intelligence  permits, by not transgressing the instructions of our preceptors. Maybe,  for a person without a regular course of the oral tradition  [of the system],  this looks  like a picture painted on the sky and does not appeal to his mind.  On that account  we should not be blamed.
 
It has been declared by some, in this context, that [here in this verse]  the oblation, the fire and the instruments like sruk [used for offering the oblation into the fire in the sacrifice]  and also the act [of offering] are all adjectives alifying the Brahmam.  This  [explanation] deserves to be ignored.  For, these commentators have not troden on the path of the secret tradition.