The Âsharshâdan (Ācaršādan; literally: "Book of Ashar"; alternatively known as Naşuh-e Âshar) is the memoirs of Âshar Mîzaremêzrah (1255– 1344), founder of the Great Horde and a successor to the lineage of Sunrise Horde rulers. It is written in the Nashaghan language, the former lingua franca of much of Vaniua and the language of administration used during the Great Horde. During the reign of the emperor Shakhsaran, the work was translated into Jazaghan, the language of commerce of the Asharid court, by an Asharid courtier Bash Gheran-e Kazan in 1350 CE.
The Âsharshâdan is known for depicting historically significant events, however, mystical imagery and references to epics were often used to embellish these accounts. Nevertheless, the book has served as a remarkable source of historical accounts, closely depicting the major campaigns embarked on by the Great Horde during the reign of its early emperors. Apart from its role as a reliable source, the book depicts incredible craftsmanship and art styles now mostly obsolete, showing clear influences from Parshitan and Soltennan art styles.