Madhvaon Brahma Sūtra 2.4.7

It is (to be understood) thus; “ Just as the light of the minute eye is pervading everywhere, so also the light of the soul pervades. Atomic indeed is the soul.” So says Sandilya Sruti, (meaning that the eye and the other organs of the same class are minute (atomic). “ This Prana (breath) does not originate, nor does he Cease to be but stands absolute and unchanged between birth and death; (i.e., is always in the prime of life). Hence the wise call him the Middle.” Thus absence of origin is declared of Mukhya Prana (or the Chief of breaths). Further the observatiou in the Vâyuprokta contains a reason, viz., “ How is it possible to think of the origin and dissolution of that Prana whose presence is life and whose separation is death ? ” On the other hand another text says : “That Prana springs from the Supreme Lord ” (Pr. III. 3). So the Sutrakara says: