11. The 'two entered into the cave' are the two Selfs; on account of this being seen.
The two, entered into the cave and drinking their reward, are neither the embodied soul together with the vital breath, nor the embodied soul together with the buddhi; it is rather the embodied Self and the highest Self which are designated by those terms. For this is seen, i.e. it is seen that in that section the individual Self and the highest Self only are spoken of as entered into the cave. To the highest Self there refers I, 2, 12, 'The wise who by meditation on his Self recognises the Ancient who is difficult to see, who has entered into the dark, who is hidden in the cave, who dwells in the abyss, as God, he indeed leaves joy and sorrow far behind.' And to the individual soul there refers I ,4, 7, 'Who is together with the vital breath, who is Aditi, who is made of the deities, who entering into the cave abides therein, who was born variously through the elements.' Aditi here means the individual soul which enjoys (atti) the fruits of its works; which is associated with the vital breath; which is made of the deities, i.e. whose enjoyment is dependent on the different sense-organs; which abides in the hollow of the heart; and which, being connected with the elementary substances, earth, and so on, is born in various forms--human, divine, &c.--That the text speaks of the two Selfs as drinking their reward (while actually the individual soul only does so) is to be understood in the same way as the phrase 'there go the umbrella-bearers' (one of whom only carries the umbrella). Or else we may account for this on the ground that both are agents with regard to the drinking, in so far as the 'drinking' individual soul is caused to drink by the highest Self.