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## Introduction
According to the first sutra, 'h' is a पूर्वसवर्ण (pre-vowel) when it follows a पदान्त झय (final consonant 'y'). For example, 'सुवाग्दसति'. According to the second sutra, 'ch' replaces 'sh' when it follows a पदान्त झय (final consonant 'y'). For example, 'षट्छयामाः'. According to the third sutra, the second 'y' is deleted when it follows a हल (consonant) and is followed by 'ym'. For example, in the word 'जय्या', there are two 'y's and a third 'y' is formed by their combination. But according to the rule of this sutra, the middle 'y' is deleted and the remaining usage is 'शय्या'. According to the fourth sutra, the third 't' is deleted when it follows a हल (consonant) and is followed by a सवर्ण झर (similar consonant 't'). For example, 'भित्ताम'. These four alternative actions occur according to the opinion of Acharya Samantabhadra. While in Panini's grammar, these actions are considered to be of another opinion.
## Siddhasena-Acharya
The sutra that explains the opinion of Acharya Siddhasena is - 'वेत्तेः सिद्धसेनस्य । 5, 1, 71'. The meaning of this sutra is that according to Siddhasena, 'रुट' is added to the 'अत्' which is the आदेशभूत (substitute) for the झ् प्रत्यय (suffix 't') that follows the विद् धातु (verb root 'vid'). For example, 'संविद्रते'. In the usage 'संविदते', 'रुट' is added after the 'd' and before the 'a' to form this alternative usage. In place of this sutra, the sutra 'वेत्तेविभाषा।7,1,7.' is found in Panini's grammar.
## The Grammar
A modified form of this grammar is available in the 'गाब्दार्णवचन्द्रिका' written by Somdevsuri. But according to many proofs, Premji has proved that it is a later refined form. The original text is the one that is available in the 'महावृत्ति' written by Acharya Abhaydev. We have mentioned some of the special features of this grammar. There are many other special features due to which it has its own independent place.
## Other Works of Acharya Pujyapada
It is known from the mentions that Acharya Pujyapada wrote many other books on various subjects besides the five mentioned above. The details are as follows:
6.-7. Jainendra and Shabdavatar Nyas - The 46th inscription in the Nagar Tahsil of Shimoga district mentions that Acharya Pujyapada wrote a 'Jainendra' Nyas on his own grammar and a 'Shabdavatar' Nyas on Panini's grammar. For example:
'न्यासं जैनेन्द्रसंज्ञं सकलबुधनुतं पाणिनीयस्य भूयो। न्यासं शब्दावतारं मनुजततिहितं वैद्यशास्त्रं च कृत्वा । यस्तत्त्वार्थस्य टीका व्यरचदिह तां भात्यसो पूज्यपाद
स्वामी भूपालवन्द्यः स्वपरहितवचःपूर्णवृग्बोधवृत्तः ॥'
Both of these are not available yet. Special research is needed in ancient libraries for this.
8. Shantiastaka - We have already mentioned the story of Acharya Pujyapada. The author of that story has mentioned a 'Shantiastaka' created by him. A Shantiastaka is also collected in a ritual activity. There is a Sanskrit commentary on it by Pandit Prabhachanda. In the beginning of the Shantiastaka, Pandit Prabhachandra, while supporting the opinion of the story writer Chandrayya Kavi, says that Sri Pad Pujya Swami had a disease of the eyes called 'mirvyaadhi' and to overcome it, he praises saying, 'न स्नेहात्'. The verse that comes at the end also expresses the same sentiment through the words 'विष्टि प्रसन्नां कुरु' etc. This shows that it is possible that at the end of his life, Acharya Pujyapada's vision was covered by darkness and he composed the Shantiastaka to overcome it.
For special knowledge about the commentary, notes, and additions of this book, see the book 'Jain Sahitya aur Itihas' written by Premji.