According to Wikipedia, the swastika was allegedly stamped on the Buddha's chest after His parinibbana. Is this true?
This symbol (right-hand) is alleged to have been stamped on The Buddha's chest by his initiates after his death. It is known as The Heart's Seal. This would predate any other particular use ascribed to it in other texts.
Full section on swastika in Buddhism:
http://en.wikipedia.org/wiki/Swastika#Buddhism
