The Gathas of Zarathustra, a reconstruction of the text, M.C. Monna
'The Gathas are 17 hymns in the Avestan language from the Zoroastrian oral tradition of the Avesta. The oldest surviving text fragment dates from 1323 CE, but they are believed by scholars to have been composed before 1000 BCE and passed down orally for centuries. They are traditionally believed to have been composed by the prophet Zarathushtra (Zoroaster) himself. They form the core of the Zoroastrian liturgy (the Yasna).' (source: Wikipedia)
