(According to the principle of the oneness of purport of the different sâkhâs) all these texts must be viewed as agreeing in meaning with the injunction of meditation contained in the passage quoted from the Bri. Up.; and what they enjoin is therefore meditation. In the first and second passages quoted, the words 'having known' and 'having searched out' (vijñâya; anuvidya) contain a mere reference to (not injunction of) the apprehension of the meaning of texts, such apprehension subserving meditation; while the injunction of meditation (which is the true purport of the passages) is conveyed by the clauses 'let him practise meditation' (prajñâm kurvîta) and 'he knows it.' In the same way the clause 'the Self is to be heard' is a mere anuvâda, i.e. a mere reference to what is already established by other means; for a person who has read the Veda observes that it contains instruction about matters connected with certain definite purposes, and then on his own account applies himself to methodical 'hearing,' in order definitely to ascertain these matters; 'hearing' thus is established already. In the same way the clause 'the Self is to be reflected upon' is a mere anuvâda of reflection which is known as a means of confirming what one has 'heard.' It is therefore meditation only which all those texts enjoin. In agreement with this a later Sûtra also says, 'Repetition more than once, on account of instruction' (Ve. Sû. IV, I, I). That the knowledge intended to be enjoined as the means of final release is of the nature of meditation, we conclude from the circumstance that the terms 'knowing' and'meditating' are seen to be used in place of each other in the earlier and later parts of Vedic texts. Compare the following passages: 'Let a man meditate on mind as Brahman,' and 'he who knows this shines and warms through his celebrity, fame, and glory of countenance' (Ch. Up. III, 18, 1; 6). And 'He does not know him, for he is not complete,' and 'Let men meditate on him as the Self (Bri. Up. I, 4, 7). And 'He who knows what he knows,' and 'Teach me the deity on which you meditate' (Ch. Up. IV, 1, 6; 2, 2).