 The story is sometimes placed within a frame story, where a saviour stands mistakenly accused and narrates this story, thereby preventing his own death.The story was first studied in 1859 by Theodor Benfey, the pioneer of comparative literature, when he compared the versions in India, the Middle East and Europe.In 1884, W. A. Clouston showed how it had reached Wales.Murray B. Emeneau considers the migration of this story, through its steps from India to Wales, as "one of the best authenticated cases of such diffusions of folk-tales".