The Nerangestan, the Book of Ritual Directions, follows the Herbedestan
in the manuscripts but is in fact a separate text, dealing with matters
of ritual where the Herbedestan is mainly concerned with religious
education. Both texts belong to the learned tradition of Zoroastrianism,
and the lengthy passages of Pahlavi commentary are often more
illuminating than the terse Avestan sentences. Still, few parts of the
text make easy reading; most Western Iranists have at best a passing
acquaintance with the various Zoroastrian rituals, while the Nerangestan
was intended to elucidate points which seemed obscure even to the
practising priests of its time. The Second Fragard of the Nerangestan is
based on the Teachings of Sosans, but was probably written down in its
present form several generations after this great Commentator. It is by
far the longest extant chapter of the text, and the wealth of
information it contains affords new insights into several aspects of the
religious and ritual life of the Zoroastrian community.