The specimen No. 1 in Plate XVII., is copied from the end of a very beautiful manuscript of the Bibliothèque Royale at Paris, containing the celebrated heroic poem of Ferdusi, intitled Shah-Nameh, or the Book of Kings; a composition of 60,000 verses, written in the tenth century in the Parsi dialect, which has become the common language of Persia.
Source: wiktionary