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## Sarvarthasiddhi
They are referring to the "Tattvarthaadhigama Arhatpravachansangraha" commentary, which they consider an independent text on Tattvartha. It is clear that the name "Tattvarthaadhigama" belongs to the commentary by Uma Swami, not to the Tattvarthasutra itself.
Two versions of the sutra text are available: one accepted by the Digambara tradition and the other by the Svetambara tradition. We will discuss the original form of the sutra text before the composition of Sarvarthasiddhi and Tattvarthabhashya in due course. The main purpose here is to provide a general introduction to these two sutra texts.
According to the Digambara tradition, the sutra numbers in the ten chapters are as follows: 33+53+39+42+42+27+39+26+47+9 = 357. According to the Svetambara tradition, the sutra numbers in the ten chapters are as follows: 35+52+18+53+44+26+34+26+49+7 = 344.
There are five main points in the first chapter where the two sutra texts differ fundamentally. The first point is the sutra that discusses the four types of matigyan. Here, the Digambara tradition accepts the "avay" reading, while the Svetambara tradition accepts the "apaya" reading. Prajnachchhu Pandit Sukhlalji, while discussing the Tattvarthasutra accepted by the Svetambara tradition, mainly accepts the "avay" reading. The second point is the sutra that discusses the 12 substances that are the objects of matigyan. Here, the Digambara tradition accepts the reading "anisritanukt-", while the Svetambara tradition accepts the reading "anishritasandhight-". The difference in meaning is clear due to the difference in reading. The third point is the sutra "dvividho'vadhi:". The Svetambara tradition considers this a sutra, while in Sarvarthasiddhi, it is part of the utthanika of the sutra "bhavapratyayavadhivanarakaanaam". The fourth point is the sutra that discusses the second type of avadhigyan. Here, the Digambara tradition accepts the reading "kshayopashamanimittah", while the Svetambara tradition accepts the reading "yathoktanimittah". The fifth point is the sutra that discusses the seven naya. Here, the Digambara tradition considers all seven naya as original and mentions them equally. However, the Svetambara tradition considers five naya as original and mentions the naigama and shabdnaya separately through two and three different sutras respectively. Generally, seven naya are considered original in both the Digambara and Svetambara traditions, and they are also mentioned as original naya in the Agamic literature. However, when considering which naya accepts which niksepa from the namadi niksepas, five naya, including naigama, are often mentioned. It is very likely that seeing this practice, Uma Swami may have considered five naya as original, and there is no surprise in that.
There are two main points in the second chapter. The first point is the sutra that discusses the parinaamik bhavas. After listing the three names of parinaamik bhavas, the Svetambara tradition accepts the adi pada, while the Digambara tradition does not. Here, while explaining the true nature of the jiva, the parinaamik bhavas are mentioned. The Digambara tradition does not mainly count other dravya and ordinary parinaamik bhavas here, while the Svetambara tradition does, and this is the purpose of giving the adi pada here. The second point is the sutra that discusses the types of sthavarakayik jivas. According to the Agamic practice, both traditions accept five types of sthavaras, and the Digambara tradition accepts five types here according to the same practice. However, the Svetambara tradition considers agnikayik and vayukayik jivas as gatitras and mentions them along with the trasas. This has led to differences in the composition of several sutras. The third point is the sutra "upayogah: sparshadish". The Svetambara tradition considers it an independent sutra, while the Digambara tradition does not consider it a sutra.
1. See, Dhavala book, 12th Vedana Pratyay Vidhan named Adhikar. See, Kashayaprabhut Pra. book, appendix page 71.