首楞嚴義疏注經 4.337

4.337

舉淺況深也。世間人說生滅和合名和合性，非和合者則無生滅方名自然，豈況我教有生滅者却名自然？古人於此不言縱立認真自然，斯則不唯增戲論心，反令圓文成外道教，焉敢聞命！

This cites what is shallow to illustrate what is deep. Worldly people say that the combination of arising and cessation is called the nature of combination, and that what is not combined is without arising and cessation, and only then called spontaneity. How much less could that which has arising and cessation in my teaching instead be called spontaneity? Past commentators, not understanding this as a hypothetical grant, took it as genuine spontaneity; this not only increases discursive thoughts, but turns the perfect text into non-Buddhist teachings—how could one dare follow such an instruction!