This is a Buddhist text written in prose and verses; this style is known as campū kāvya.The author of the text is Āryaśūra, belonged to the late 3rd or early 4th century. This text describes the previous lives of the Buddha, as the Jātaka texts do. Therefore, this text can also be categorised as a Jātaka text. Originally, the text contained 34 Jātaka stories, but this manuscript includes 1-30 stories (upto Hastijātaka).
Avadānamālā; Bodhisattvāvadānamālā, 'Jātaka--mālā-'vadāna-sūtra' (Matsunami)
General Library, The University of Tokyo