首楞嚴義疏注經 9.386

9.386

夫真空不妨妙有，有而性常自空，所以具修萬行，了無所著。若欲杜絕眾行以為深空，即同外道斷見，撥無因果。魔得其便，從空出沒，幻惑其心。

Now, true emptiness does not obstruct wondrous existence; existing, its nature is always intrinsically empty. Therefore, one completely cultivates the ten thousand practices yet remains utterly without attachment. If one wishes to block out all practices in the name of 'deep emptiness', this is identical to the nihilistic view of non-Buddhists, discarding cause and effect. The demon seizes its opportunity, appearing and disappearing from emptiness, deceptively bewitching his mind.