When he sees a goddess he asks her why she doesn't get rid of her female form (for a male one, since he thinks that would be better). She answers him by changing herself into a male form and Sariputra into a female form, then she mocks him with his own question. The poor guy is bewildered. She then changes him back and explains how neither male nor female is anything, and thereby helps Sariputra along his way to enlightenment by showing the blindness of his sexism.