Zend

But in the course of time the Avesta was subjected to many additions and interpretations, called the Zend, which show degeneracy.

The essay published in 1831 by Peter von Bohlen on the origin of the Zend language threw the matter forty years back.

The Zend word afrt, "blessed," corresponds to the Arabic afrt, "a rebellious angel."

Berber is full of Arab words, and Persian of words of every origin, which probably did not exist in Zend.

We derive our knowledge of their religion principally from their Zend-avesta, or Sacred Book.