Śaṅkaraon Brahma Sūtra 2.4.8

The Sutra extends to the chief vital air (mukhya pra;/a) a quality already asserted of the other pra«as, viz. being an effect of Brahman.—But, an objection may be raised, it has already been stated of all prawas without difference that they are effects of Brahman ; e. g. the passage, ‘From him is born breath, mind, and all organs of sense’ (Mu. Up. II, 1, 3), states the origin of pra«a separately from the senses and the manas ; and there are other passages also such as ‘ He sent forth pra;/a ’ (Pr. Up. VI, 4). Why then the formal extension? We reply: For the purpose of removing further doubt. For in the N^sadiya-siikta whose subject is Brahman there occurs the following mantra ‘There was neither death nor the Immortal; nor manifestation of either night or day. By its own law the One was breathing without wind ; there was nothing different from that or higher than it’ (Ri. Sa;;/h. X, 129, 2). Here the words, ‘was breathing,’ which denote the proper function of breath, intimate that breath existed as it were before the creation. And therefrom it might be concluded that prawa is not produced ; an idea which the Sutrakdra discards by the formal extension (to pra//a of the quality of having originated from Brahman). —Moreover the word ‘breathed’ does not intimate that prawa existed before the creation ; for in the first place it is qualified by the addition ‘without wind,’ and in the second place scriptural passages such as ‘ He is without breath, without mind, pure’ (Mu. Up. II, i, 2) declare expressly that the causal substance is without any qualifications such as prti;/a and so on. Hence the word ‘breathed’ has merely the purpose of setting forth the existence of the cause. The term ‘ the best ’ (employed in the Sutra) denotes the chief vital air, according to the declaration of scripture, ‘ Breath indeed is the oldest and the best’ (Kk, Up. V, i, i). The breath is the oldest because it begins its function from the moment when the child is conceived ; the senses of hearing, &c., on the other hand, begin to act only when their special seats, the ears, &c., are formed, and they are thus not ‘the oldest.’—The designation ‘the best’ belongs to the prawa on account of its superior qualities and on account of the passage, ‘ We shall not be able to live without thee.’ (Bn. Up. VI, i, 13).