仁王護國般若波羅蜜多經疏 2.26

2.26

問：前四諦下一切皆空，此諸法下一切皆空。二文何別？答：前唯境空，此亦智空。雖境與智，皆自性空。顯智照如，智即無相，故合明矣。從此第二歷法明空。文分為六：且初第一明內外空。

Question: Earlier under the four truths it said "all are entirely empty," and here under all phenomena it says "entirely empty." What is the difference between the two passages? Answer: The earlier text referred only to the emptiness of the object; this text also includes the emptiness of cognition. Although both object and cognition are empty of intrinsic nature, to reveal that cognition illuminates suchness and that cognition is itself signless, they are explained together. Next is the second [part], going through phenomena to clarify emptiness. The text is divided into six: first, clarifying internal and external emptiness.