金剛般若經依天親菩薩論贊略釋秦本義記卷上 1.68

1.68

經。如來所說法皆不可取不可說非法非非法　第四釋也。此中但說言化說非真非謂都無言說。是故經言。如來所說法皆不可取不可說也。聽者不可作有無相取說者不可作有無相說。何以故。非法非非法故。言非法者妄法無體故。非非法者真如實有故。

[Sūtra:] "The Dharma preached by the Tathāgata can neither be grasped nor expressed; it is neither dharma nor non-dharma." The fourth is the explanation. Here it merely says that the teaching of the nirmāṇakāya is not the absolute truth; it does not mean there are no verbal expressions at all. Therefore the sūtra says: "The Dharma preached by the Tathāgata can neither be grasped nor expressed." The listener cannot grasp it making notions of existence or non-existence, and the preacher cannot preach it making notions of existence or non-existence. Why is this? Because it is neither dharma nor non-dharma. "Dharma" [in non-dharma] means false dharmas have no substance; "non-non-dharma" means that suchness is truly existent.