The Antarah topic examines the celebrated image from the Katha Upanishad of “two who have entered the cavity of the heart.” The question is whether these two are the individual soul and the intellect, or the individual soul and Brahman. The sutras establish that the pair must be the individual self and the Supreme Self.
The decisive argument rests on sameness of class. When one conscious being is already present in the passage—the individual soul—the second must also be of the same order. Scriptural language naturally groups like with like. Therefore the second cannot be the insentient intellect, but must be another conscious principle, namely Brahman.
An objection arises because both are spoken of as enjoying the fruits of action, which seems impossible for Brahman. Vedanta resolves this through a familiar figure of speech: the attribute of one member of a group may be extended to the whole group. In reality only the individual soul experiences karma, but the pair is spoken of collectively for the sake of teaching.
The following passages in the same section strengthen this conclusion by clearly distinguishing the seeker and the goal. The soul is compared to the charioteer, while the final destination is the supreme state of Vishnu. This establishes the two as the traveller and the reality attained, which corresponds perfectly to Jiva and Brahman.
The meditative context also supports this reading. Earlier in the text the sage is said to transcend joy and sorrow upon realising the effulgent One seated in the heart. The one realised through meditation cannot be the intellect, but only the indwelling Brahman.
The beauty of Antarah lies in its interiority. The heart becomes the sacred meeting place of the finite and the infinite, the individual experiencer and the silent witnessing Absolute. The passage turns inwardness itself into the path of liberation.
Original Text