Mādayān ī Hazār Dādestān

Mādayān ī Hazār Dādestān, (Book of a Thousand Judgements), is a significant primary document concerning the social and institutional history of Sasanian Iran and the only entirely legal treatise on pre-Islamic Sasanian jurisprudence to have survived from the Zoroastrian era. Unlike subsequent Pahlavi books of the 9th and 10th centuries, which combined juridical and religious themes, the Madayan focuses solely on legal questions, in contrast to all other known sources on Zoroastrian and Sasanian law.

The manuscript was given to the Hataria Library by Maneckji Limji Hataria, and it was made available to the West through J. J. Modi's facsimile in 1901.