大方廣圓覺修多羅了義經略疏 1.568

1.568

此云正受。由達身心如幻，則冥本覺真如如鏡受影，非受非拒，故名正受。

This is called correct reception. Because of penetrating body and mind as like an illusion, one covertly accords with the tathatā of original enlightenment like a mirror receiving reflections—neither receiving nor rejecting; hence it is named correct reception.