गतिशब्दाभ्यां, तथा हि दृष्टं लिङ्गं च ॥ १५ ॥
gatiśabdābhyāṃ, tathā hi dṛṣṭaṃ liṅgaṃ ca || 15 ||
gatiśabdābhyām—From going and the word; tathā hi—likewise; dṛṣṭaṃ—it is seen; liṅgam—indicatory; ca—and.
15. The small Akasa (is Brahman) on account of going (into Brahman) and of the word (Brahmaloka); it (i.e. the individual soul’s going into Brahman) is likewise seen (from other Sruti texts); and (the daily going) is an indicatory sign (by which we can interpret the word Brahmaloka).
This Sutra gives further reasons that the ‘small Akasa’ is Brahman.
“All these creatures day after day go into this Brahmaloka(i.e. they are merged in Brahman while fast asleep) and yet do not discover it” etc. (Chh. 8. 3. 2).
This text shows that in deep sleep all Jivas go daily into the ‘small Akasa’, called here Brahmaloka (the world of Brahman), thus showing that the ‘small Akasa’ is Brahman. In other Sruti texts also we find that this going of the individual soul into Brahman in deep sleep is mentioned : “He becomes united with the Real (Sat), he is merged in his own self” (Chh. 0. 8. 1). The word ‘Brahmaloka’ is to be interpreted as Brahman Itself, and not as the world of Brahma, because of the indicatory sign in the text where it is said that the soul goes to this world every day, for it is not possible to go to the world of Brahma every day.