You can get Tattvartha Sutra very easily in PDF, but it is best to choose an authentic Jain source.

Here are simple options:

1. Jain eLibrary (most common)

- Go to the Jain eLibrary website (run by Jain institutions). - Search for: “Tattvartha Sutra” or “Tattvarthadhigama Sutra”. - You will find: - Original Sanskrit text - Hindi / Gujarati / English translations - Digambar and Shwetambar commentaries

1. Jain sangh / temple websites

- Many Jain organizations host free PDFs of Tattvartha Sutra (often with arth and tika). - Search with keywords like: - “Tattvartha Sutra PDF Hindi” - “Tattvartha Sutra English PDF” - “Tattvarth Sutra 128 shlok PDF”

1. Physical book (recommended for serious study)

- Any good Jain book shop (temple, upashray, or Jain stall during Paryushan) will have: - Tattvartha Sutra with Sanskrit + arth - Separate Digambar / Shwetambar style commentaries

On JainKnowledge there is introductory material on Tattvartha Sutra which can guide you on what the text contains and why it is important. You can read more here