" Like metals, myths too get recycled. Reworked and so richly embellished as to be almost unrecognisable, stories which may once have reflected genuine historical events are liable to be re-used by later generations in a totally different context and for purposes quite other than that for which they were originally intended. This is not the case with the corpus of Vedic literature; the form and content of its sacrificial formulae were, as has been noted, too ritually crucial to be tampered with. Less sacred compositions, like the two great Sanskrit epics, were a different matter. "

― John Keay , India: A History