Definition
"Zend-Avesta" is a term historically used to refer to the Avesta along with its commentaries. The term "Zend" refers to the commentary or interpretation of the Avestan texts. Itβs like the original text (Avesta) with a detailed study guide (Zend) included. The Zend helps to understand the complex Avestan language and ideas. Together, they provide a complete understanding of Zoroastrian teachings.