Majjhima Nikaya 1:73
SUJATOnevasaññānāsaññāyatanaṁ nevasaññānāsaññāyatanato saññatvā nevasaññānāsaññāyatanaṁ maññati, nevasaññānāsaññāyatanasmiṁ maññati, nevasaññānāsaññāyatanato maññati, nevasaññānāsaññāyatanaṁ meti maññati, nevasaññānāsaññāyatanaṁ abhinandati.
Having perceived the dimension of neither perception nor non-perception as the dimension of neither perception nor non-perception, they conceive it to be the dimension of neither perception nor non-perception …