) made it their scriptural authority. It is a complex work, fusing many different traditions, hence its wide popularity. Its basic structure and content derive from the Vi u Pur a (with traces of influence also from the M rka eya-pur a ). But unlike that source, and the earlier pur as generally, it uses highly sophisticated lyrical metres and descriptions (often presented as songs). Also, the form of devotion it advocates—an intense emotionalism that aims at ecstasy —is quite different from earlier bhakti texts (such as the Bhagavad-g t or the Vi u Pur a