法界次第初門 2.47

2.47

七、非有想非無想背捨。若捨無所有處，一心緣非有想非無想入定時，即觀此定依陰、入、界，故有無常、苦、空、無我，虛誑不實，心生厭背而不受著，深入一向不迴，是為非有想非無想背捨也。

Seventh, the liberation of the sphere of neither-perception-nor-non-perception. If, casting off the sphere of nothingness, one single-mindedly takes neither-perception-nor-non-perception as object upon entering concentration, one then contemplates that this concentration relies on the skandhas, āyatanas, and dhātus, and therefore is impermanent, suffering, empty, non-self, deceptive, and unreal; generating a mind of revulsion and turning away, one does not cling to or attach to it, but enters deeply and single-mindedly without turning back—this is the liberation of the sphere of neither-perception-nor-non-perception.