Buddha had once said: “The things, Oh Sariputra, they do not exist as they seem to the ordinary unenlightened people, who are attached to them.” Sariputra said, “So how do things exist, my Master?” Buddha replied: “They exist only in such a way that they actually do not exist. As they do not exist, they should be called Avidyā, which means non-existent. It is them that the ordinary unenlightened people are attached to, who imagine that objects in fact exist, while none of them are existent.”
Then Buddha asked the Venerable Subhuti: “Do you think Subhuti that illusion is one thing and body another? Is illusion one thing and feeling another? Idea another? Shape another? Knowledge another?” Subhuti replied: “No, my Master.” Then Buddha said: “The nature of illusion makes things what they are. This is done in such a way, Oh Subhuti, as if a skillful wizzard or wizard’s apprentice pointed at crowds of people at the crossroads and, upon showing them, made them disappear again.”
Prajñāpāramitā (Perfect knowledge)