The Comparison and adaptability of Spandyār personage in Avestan and Pahlavi texts with Spandyār in Goshtaspnameh and Shahnameh within the battles of Goshtasp and Arjasp (before his fight with Rostam)

The texts of Avesta book, in Avestan language and the script, and other middle Persian works in Pahlavi language and the script are considered first hand resources to recognize Iranian Myths. Direct and unmediated use of reliable resources and pre-Islam works gives a tangible and real conception of the mythological personages and their fates through those silent languages to addressee. So a knowledge of writing system and ancient languages, in addition to its benefits for linguistic studies about Persian language and literature may also be used as a key measure to help the researchers in comparative survey on Iranian ancient myths and Ferdowsi’s shahnameh. It also helps them to analyses the evolution of Mythical Iranian history and to reveal different aspects of similarities and differences according to evidences to gain reliable documents about mythology and to convey it through conception of myths, morals and the personage of mythical roles and also to investigate the trend of the evolution that in the later eras led to transformation in the fate of mythical personages and pave the way to cite the original ancient Iran literature and to revive silent languages and make them more viable and applicable in research on Persian language and literature.