首楞嚴義疏注經 4.328

4.328

本真不動，妄自強生，說誰因緣及自然性？若知因緣自然俱是戲論，分別自亡、真覺自顯，斯則正是我說三緣斷故即菩提也。

The fundamental reality does not move; delusion forcibly arises of itself; of what can one speak in terms of causes and conditions or a spontaneous nature? If one knows that causes and conditions and spontaneity are both frivolous assertions, discrimination perishes of itself and true awakening reveals itself; this is precisely what I mean by saying that because the three conditions are severed, it is bodhi.