28. And there is permission of all food in the case of danger of life; on account of this being seen.
In the meditation on prâna, according to the Vâjasaneyins and the Chândogas, there is a statement as to all food being allowed to him who knows the prâna. 'By him there is nothing eaten that is not food' (Bri. Up. VI, 1, 14; and so on). A doubt here arises whether this permission of all food is valid for him who possesses the knowledge of prâna, in all circumstances, or only in the case of life being in danger.—The Pûrvapakshin holds the former view, on account of no special conditions being stated in the text.—This the Sûtra sets aside 'in the case of danger to life'; for the reason that, as the text shows, the eating of food of all kinds is permitted even for those who know Brahman itself— the knowledge of which of course is higher than that of prâna—only when their life is in danger. The text alluded to is the one telling how Ushasta Kâkrâyana, who was well versed in the knowledge of Brahman, once, when in great distress, ate unlawful food. We therefore conclude that what the text says as to all food being lawful for him who knows prâna, can refer only to occasions when food of any kind must be eaten in order to preserve life.
29. And on account of non-sublation.
The conclusion above arrived at is confirmed by the consideration that thus only those texts are not stultified which enjoin, for those who know Brahman, purity in matters of food with a view to the origination of knowledge of Brahman. Cp.' when the food is pure the mind becomes pure' (Ch. Up. VII, 26, 2).
30. This is said in Smriti also.
That for those as well who know Brahman, as for others, the eating of food of any kind is lawful only in case of extreme need, Smriti also declares, 'He who being in danger of his life eats food from anywhere is stained by sin no more than the lotus leaf by water.'
31. And hence also a scriptural passage as to non-proceeding according to liking.
The above conclusion is further confirmed by a scriptural passage prohibiting licence of conduct on the part of any one. The text meant is a passage in the Samhitâ of the Kathas, 'Therefore a Brahmawa does not drink spirituous liquor, thinking "may I not be stained by sin."'—Here terminates the adhikarana of 'the allowance of all food.'
32. The works of the âsramas also, on account of their being enjoined.
It has been said that sacrifices and other works are auxiliary to the knowledge of Brahman. The doubt now arises whether those works are to be performed by him also who merely wishes to fulfil the duties of his âsrama, without aiming at final Release, or not. They are not, the Pûrvapakshin holds, for that things auxiliary to knowledge should stand in subordinate relation to a certain state of life would imply the contradiction of permanent and non-permanent obligation.—Of this view the Sûtra disposes, 'The works of the âsramas also.' The works belonging to each âsrama have to be performed by those also who do not aim at more than to live according to the âsrama; for they are specifically enjoined by texts such as as long as life lasts he is to offer the Agnihotra'; this implies a permanent obligation dependent on life. And that the same works are also to be performed as being auxiliary to knowledge appears from the texts enjoining them in that aspect, 'Him they seek to know by the study of the Veda' (Bri. Up. IV, 4, 22); this the next Sûtra declares.