This poem celebrates the exploits of Garshāsp, prince of Sistan, and one of the ancestors of Rustam (the celebrated hero in Firdawsī's Shāh-nāmah). It is said to be one of the earliest attempts to imitate Firdawsī.

It is usually ascribed to the poet Asadī Ṭusī, the master of Firdawsī, who flourished during the reigns of Sulṭān Maḥmūd and his son Mas'ūd of Ghaznī, and died in that of the latter (421-432 A.H., 1030-1040 C.E.). However, some of the copies described in other collections give the date of composition as 458 A.H. (1066 C.E.).

The present copy is written in fine nast'līq in four columns, framed by coloured lines, with headings in red or gold. It is bound with OR MS 267, the second volume of Firdawsī's Shāh-nāmah. The text of the Shāh-nāmah is followed in the binding by a further epic poem Sām-nāmah (OR MS 272), after which the text of the present work begins. The three works appear to be by the same hand. Although this work is undated, the counter part to version of the Shāh-nāmah with which this work is bound (vol. 1, OR MS 266) bears a seal that suggests that it was extant by the early 17th century C.E..