If one has a bad dream at night but does not know it is a dream, one will be as terrified by circumstances in the dream as by the same events in daytime; whereas if one knows one is dreaming, even jumping from the tenth floor of a building will not stir any fear. By the same token, genuine practitioners having attained realization of emptiness perceive no difference between things appearing in dreams and during the day. Aiming to quickly destroy attachment, they deliberately accept the five meats and five nectars which originally are regarded as defiled; it is not unlike jumping from the tenth floor of a building in the dream on purpose. Doing so lends particularly obvious effect on cutting through attachment and no harm to their practice either. From the standpoint of self-benefit, this is a very good practice. But from the summit of Dzogchen looking down, this is still an attachment: if all are illusions, why bother doing anything intentionally?

- Quote from Gateway to the Vajrayana Path, "The Parable of a Black Snake"