We do not know anything about Âsuri the direct disciple of Kapila [Footnote ref 1]. But it seems probable that the system of Sâ@mkhya we have sketched here which appears in fundamentally the same form in the Mahâbhârata and has been attributed there to Pañcas'ikha is probably the earliest form of Sâ@mkhya available to us in a systematic form. Not only does Gu@naratna's reference to the school of Maulikya Sâ@mkhya justify it, but the fact that Caraka (78 A.U.) does not refer to the Sâ@mkhya as described by Îs'varak@r@s@na and referred to in other parts of Mahâbhârata is a definite proof that Îs'varak@r@s@na's Sâ@mkhya is a later modification, which was either non-existent in Caraka's time or was not regarded as an authoritative old Sâ@mkhya view.
Wassilief says quoting Tibetan sources that Vindhyavâsin altered the Sâ@mkhya according to his own views [Footnote ref 2]. Takakusu thinks that Vindhyavâsin was a title of Îs'varak@r@s@na [Footnote ref 3] and Garbe holds that the date of Îs'varak@r@s@na was about 100 A.D. It seems to be a very plausible view that Îs'varak@r@s@na was indebted for his kârikâs to another work, which was probably written in a style different from what he employs. The seventh verse of his Kârikâ seems to be in purport the same as a passage which is found quoted in the
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[Footnote 1: A verse attributed to Âsuri is quoted by Gu@naratna (Tarkarahasyadîpikâ, p. 104). The purport of this verse is that when buddhi is transformed in a particular manner, it (puru@sa) has experience. It is like the reflection of the moon in transparent water.]
[Footnote 2: Vassilief's Buddhismus, p. 240.]
[Footnote 3: Takakusu's "A study of Paramârtha's life of Vasubandhu," J. R.A.S., 1905. This identification by Takakusu, however, appears to be extremely doubtful, for Gu@naratna mentions Îs'varak@r@s@na and Vindhyavâsin as two different authorities (Tarkarahasyadîpikâ, pp. 102 and 104). The verse quoted from Vindhyavâsin (p. 104) in anu@s@tubh metre cannot be traced as belonging to Îs'varak@r@s@nâ. It appears that Îs'varak@r@s@na wrote two books; one is the Sâ@mkhya kârikâ and another an independent work on Sâ@mkhya, a line from which, quoted by Gu@naratna, stands as follows:
"Pratiniyatâdhyavasâya@h s'rotrâdisamuttha adhyak@sam" (p. 108).
If Vâcaspati's interpretation of the classification of anumâna in his Tattvakaumudî be considered to be a correct explanation of Sâ@mkhya kârikâ then Îs'varak@r@s@na must be a different person from Vindhyavâsin whose views on anumâna as referred to in S'lokavârttika, p. 393, are altogether different. But Vâcaspati's own statement in the Tâtparyya@tîkâ (pp. 109 and 131) shows that his treatment there was not faithful.]
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Mahâbhâsya of Patañjali the grammarian (147 B.C.) [Footnote ref 1]. The subject of the two passages are the enumeration of reasons which frustrate visual perception. This however is not a doctrine concerned with the strictly technical part of Sâ@mkhya, and it is just possible that the book from which Patañjali quoted the passage, and which was probably paraphrased in the Âryâ metre by Îs'varak@r@s@na was not a Sâ@mkhya book at all. But though the subject of the verse is not one of the strictly technical parts of Sâ@mkhya, yet since such an enumeration is not seen in any other system of Indian philosophy, and as it has some special bearing as a safeguard against certain objections against the Sâ@mkhya doctrine of prak@rti, the natural and plausible supposition is that it was the verse of a Sâ@mkhya book which was paraphrased by Îs'varak@r@s@na.