• Jain vachan simply means speech or teaching. In Jainism, the word vachan (speech) is used for the words and teachings of the Tirthankaras and other Jain teachers.

• Common Jain uses:

- Jinvani (or Jinavani): the teachings of the Jina (the Tirthankaras) presented as their divine, comprehensible message. This is a familiar way Jains refer to the Jina’s sermons and scriptures. - Pravachan: a sermon or discourse given by a Jain monk or scholar, explaining Jain principles and scriptures. - Shrut Jnana: the scriptural knowledge heard or revealed, i.e., the canonical teachings in Jain literature.

• Differences between Digambar and Śvetambar:

- The basic idea of vachan as spoken teachings remains the same in both traditions, but the terms and emphasis can vary by tradition. For example, Jinvani is a common term across many Jain communities, but exact collections and renderings of the Jina’s teachings may differ slightly between Digambar and Śvetambar lineages.

If you’d like, I can share a simple example phrase in Ardhamagadhi that is often cited as a type of Jain vachan, along with its meaning.