It may be noted that  both Balaki and Ajatasatru discussed the matter among themselves, the former  keeping a lower concept and the latter keeping a higher concept of Brahman. Ajatasatru  contemplates on a more generalized form of objects than their particular ones which  is the focal point of Balaki.
In this way the  mantras 3 to 13 that follow in this section take different objects as Brahman  with higher and higher attributes for debate. This conversation is tabulated as  under.
  
    Mantras  | 
    What    Balaki Gargya considered as Brahman  | 
    What    Ajatasatru considered as Brahman  | 
  
  
    3  | 
    Moon    as a form  | 
    Considers the    moon as an embodiment of the cosmic vitality and energy which beams forth    through the form, as if it is dressed in white robes. Meditation is upon the    coolness of the moon, its watery aspect, its rays and its light or luminosity    - all as nothing but the expression of Prana.  | 
  
  
    4  | 
    Lightning as Brahman because it flashes forth indicating as if the spiritual light itself is    flashing.  | 
    Meditation on the general    background of all luminosity, contemplating on the luster of lightning.  | 
  
  
    5  | 
    Akasa or Space as Brahman.  | 
    Meditation is    on completeness of perception, and its immobility. Everything moves, but    space does not move. It is fullness. Contemplation is on fullness or    infinitude which includes space in it. Instead of going for the manifested    form of space, contemplation is on that which is prior to the manifestation    of space, the Supreme Bhuma, the fullness of Being, the immobile    Reality.  | 
  
  
    6  | 
    Air    or Vayu  | 
    Meditation    upon the quality of Vayu as an indomitable entity before whom nobody    can stand, an invincible force of every kind of power, or capacity and not on    the tangible form of Vayu.  | 
  
  
    7  | 
    Fire    or  Agni  | 
    Contemplate on    fire as supreme tolerance. Nobody can tolerate things as fire does. It    accepts whatever is thrown into it without any objection. Fire is a consumer,    acceptor and absorber of anything and everything. Fire is tolerance    incarnate. So, meditation is on fire as universal tolerance, a capacity to    absorb anything into oneself and not on fire as luminosity.  | 
  
  
    8  | 
    Meditates on the water because it    is liquid and it is formless.  | 
    Meditates upon    water as that which is agreeable because water has the character of    agreeability. Everyone is fond of water. Water is agreeable to everyone,    human, subhuman or superhuman. So contemplation is on the general character    of goodness, amiability and agreeability which is reflected in the principle    of water.   | 
  
  
    Mantras  | 
    What    Balaki Gargya considered as Brahman  | 
    What    Ajatasatru considered as Brahman  | 
  
  
    9  | 
    Meditates upon that which is seen    in the mirror. 
      Note: There is a kind of    meditation called Darpana-Yoga. It is said that nothing is more    attractive than one's own face. It is liked by people more than anything    else. If you look at your face in the mirror, you would not like to withdraw    your attention from it. You would go on looking because you are somehow the    most beautiful person in the world according to you. Others are secondary. No    one can be as beautiful as 'I'. Everyone thinks like this. The mind is drawn    to the face in the mirror. If you wish to concentrate upon an object,    concentrate on your own face first. Then the mind will not wander away. Your    difficulty of the drifting mind will not be there afterwards  | 
    Does not    contemplate on the form that is reflected in the mirror but the capacity of    reflection itself. That is what is regarded as superior to what is reflected.    How is reflection possible is more important than, what is reflected. Meditation    is on the reflecting capacity in the mirror which is something different from    the form of the mirror or the shape of the reflected form. The capacity to    reflect is prior to the object that is reflected. This method of meditation    goes to the prior, the antecedent, rather than the subsequent or the    posterior; because the posterior is the effect. There is something in the    mirror which enables it to reflect the object in itself. That something is superior    to the object that is reflected; that is Brahman, the object of    meditation.  | 
  
  
    10  | 
    Gargya said “when you walk,    especially in the dark, alone, you hear sound coming from behind, as if    somebody else is walking behind you. Some people fear to walk in darkness,    alone, because they hear some sound from behind, as if somebody was walking    behind them, or pursuing them. What is this sound from behind? I contemplate    on that because it is a peculiar aspect of Reality, from my point of    view."  | 
    The King said    “I contemplate on the reason behind hearing that sound. It is not that    someone is walking behind you. It is the peculiar vibration of the Prana emanated by the soles of the feet. It is a thud created by the Prana-Sakti that is ejected through the feet when you walk. You cannot hear it when you    walk in the midst of people or when you are in a crowd or when you are    otherwise engaged, etc. When you are alone, in darkness especially, then only    you silently hear this sound made by the Prana in your own body. I    consider Prana, the life principle, as the object of meditation rather    than the sound that it makes because of walking. I contemplate on Prana as Brahman, because this sound comes from Prana only”.  | 
  
  
    Mantras  | 
    What    Balaki Gargya considered as Brahman  | 
    What    Ajatasatru considered as Brahman  | 
  
  
    11  | 
    Contemplates on the quarters of    the heaven, the directions, as the symbol of Brahman, because of there    being a resemblance between the quarters of space and the nature of Brahman,    the resemblance being that both point to an endless existence  | 
    Contemplates on the presiding    deities of these directions, Asvins, rather than on  the directions themselves which are only    their outer expressions  | 
  
  
    12  | 
    Contemplates on the shadow of one’s    own body.  | 
    Meditation is    on shadow as death. The shadow of an object is the appearance of the object.    This relationship between the reflection and its original is the same    relationship that obtains between appearance and Reality. Appearance is death    (mrtyu) from one angle of vision. Reality is life. Inasmuch as all    those who are caught up in appearances are subject to transiency, death comes    upon everyone. We may regard the shadow as a symbol of death.  | 
  
  
    13  | 
    Meditates on the selfhood of his    personality as Brahman.  | 
    The king    considers the self mentioned by Balaki as ‘individual self’ while what he    contemplates upon is Brahman, the higher Self, the Cosmic Mind. A    consciousness of' the lower self is merely an expression of the consciousness    of higher Self.   | 
  
When Balaki’s  conceptions of Brahman were thus rejected one by one by Ajatasatru, he had  nothing further to say and hence fell silent with his head down.
14. When Balaki did not speak further  and kept quiet Ajatasatru queried: "Is this all, or is there anything  further for you to tell me; is everything over?"  “That is all," he replied. "I have  nothing else to tell." Then Ajatasatru spoke: "With this little  learning that you have you cannot be said to have known Brahman."  Gargya understood where actually he stands. "Yes; I appreciate what you  say. I, now, approach you as your disciple. There is no other alternative for  me. I came with the idea of teaching you. Now I have to stand before you as  your student."
Gargya knew only  the conditioned Brahman and not the Absolute Brahman, which is the ultimate  cause of all things, yet he had attempted to teach Ajatasatru about the Supreme  Brahman. It is not that the knowledge of conditioned Brahman is futile; it is  only with that knowledge the aspirant acquires the knowledge of Supreme  Brahman. The understanding of the relative character of Brahman cannot be  discarded so long as one is attached to the world. 
Balaki knows  that the profound knowledge of Brahman can only be transmitted by a teacher to  his disciple. Hence he, though a Brahmana, asked Ajatasatru, a Kshatriya, to  accept him as his disciple.