The Gathas are 17 great hymns which the prophet, Zarathushtra, composed in an ancient dialect not known outside the Gathas and a few other ancient texts. The rest of the surviving avesta consists of liturgical texts preserved in various later stages of the same language (but not in exactly the same dialect), known collectively as the 'Younger Avesta', although some of the matter is extremely old. Zarathushtra's teachings were handed down orally from generation to generation until committed to writing under the Sasanians The Vendidad, or 'Law against demons', is a compilation of scattered traditions in the form of questions and answers between Zoroaster and Ahura Mazda. From internal evidence, it appears to have been written down in the Parthian period.
The body of sacred writings of the Zoroastrian religion
The Torah.
No. The sacred writing of Judaism is the Bible, also called the Tanakh. The Vedas are one of several Hindu Holy Books.
Avesta!
All 24 books of the Hebrew Bible are considered sacred to Judaism. The primary sacred books are the books of the Torah. Secondary would be the books of the Prophets, and lastly, the Holy Writings, such as the Psalms and Proverbs.
Canon.
The sacred writings in a whole is called the TaNaKh which stands for Torah, Nevi'im and Ketuvim. It is written in the Jewish language called Hebrew, except for the books Ezra, Nehemiah, Daniel which are written in Aramaic.
The sacred book is called the Quran, and it consists of 114 chapters, known as Surahs. The Quran is divided into sections, with the first five chapters being Al-Fatiha, Al-Baqarah, Al-Imran, An-Nisa, and Al-Maidah.
The Bible.
The sacred book of Judaism is called the Torah. It is composed of the first five books of the Hebrew Bible: Genesis, Exodus, Leviticus, Numbers, and Deuteronomy.
It is called the Bible or the Sacred Scriptures. God inspired humans to write it.
The most sacred part is the Torah, which is the first 5 books of the Hebrew Bible.