維摩經玄疏 5.122

5.122

若通教，雖說苦道即是真性，乃是偏真法性之理；說煩惱即空，空非實慧；雖明業道即空，空非方便，故非三種不思議解脫也。

As for the shared teaching, although it states that the path of suffering is identical to the true nature, this is merely the principle of the one-sided true dharma-nature. It states that affliction is identical to emptiness, but emptiness is not real wisdom. Although it explains that the path of karma is identical to emptiness, emptiness is not expedient means. Therefore, these are not the three kinds of inconceivable liberation.