坐禪三昧經 2.12

2.12

Mindful of the sphere of neither perception nor non-perception: if all perceptions have many afflictions, like a disease, like an ulcer, while non-perception is a place of foolishness; therefore, neither perception nor non-perception is the foremost, peaceful, and wholesome place. Contemplating the faults of the sphere of nothingness and mindful of the virtues of neither perception nor non-perception, practicing mindfulness of this dharma, he then attains the sphere of neither perception nor non-perception.