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160 Studies in Umāsvāti 3. Indranandi-ācārya while referring to the commentaries on
Şakhandāgama and Kasāyaprābhrta, after mentioning the names of Kunda (Konda) ācārya and Śhyāmu-kunda, says “Tumbulūrācārya, cf the village Tumbulūr, wrote Cūdāmņi, a commentary on Ubhaya-siddhānta, except the sixth part of it (the Mahābandha), of 84,000 granthāgras, in Kannada language and later he wrote a pañcikā of another 7000 granthāgras on the sixth khanda (Mahā-bandha) also'. The earliest and first to mention the name of Cūdāmani and it's author Tumbulūrācārya is Indranandi (c. 930). Though the name Cūdāmani is the same and both are commentaries in Kannada the work referred by Indranandi and Bhaākalanka (1604) are different, the former is a commentary on Ubhaya-siddhānta and the latter is a commentary on Tattvārthasūtra.
Thus there are three works bearing the name of Cūdāmaņi, all of the extent of 96,000 granthāgras, all of almost the same period of mid seventh century and written in Karnataka. It is a rare coincidence. The obvious similarities have led the scholars to think of works and authors being one and the same; B. L. Rice (1890) concluded that Śrīvardhadeva also called Tumbulūrācārya was the author of Cūdāmani which Bhaākalanka in his Sabdānuśāsana praises as if he considered it the greatest work in Kannada language. But a careful scrutiny will make it clear that all the three works are different; Cāmundarāya (978) has mentioned the names of Śrīvardhadeva and Tumbulūrācārya separately.
It is probable that the number 96,000 synchronised with the numerically designated Gangavādi-96,000, because the above works were composed (perhaps patronised) during the reign of the Gangas, particularly, during the period of Śrīvikrama, Bhūvikrama and sisapriya Śivamāra.