摩訶止觀 9.132

9.132

又諸通若精細者，即是三明，但非無漏明耳。譬如盲聾眼耳忽開，則大歡喜；況無量劫來五根內盲，今破五翳，淨發五通？一一通中皆有五支。如眼障破，覺於眼根與色作對，即覺支；分別色等無量種相，即觀支；此通開即大慶悅，是喜支；內心受樂，即樂支；無緣無念湛然，即一心支。餘四通亦如是。若就諸禪之體，或內心得解，或外相不明，而有隱沒之義。神通是定家之用，用必明了，是故悉是不隱沒也。

Furthermore, if the supernormal powers are refined and subtle, they are the three clarities, though they are not the uncontaminated clarity. For example, when the blind and deaf suddenly have their eyes and ears opened, they experience great joy; how much more so when the five sense faculties have been internally blind for immeasurable kalpas, and now having broken through the five cataracts, cleanly manifest the five supernormal powers? Within each and every supernormal power there are five limbs: when the obstruction of the eye is broken and one is aware that the eye faculty confronts forms, this is the limb of awareness; distinguishing the immeasurable kinds of marks of forms and so on is the limb of observation; when this power opens, there is great rejoicing, which is the limb of joy; the inner mind experiencing pleasure is the limb of pleasure; being without objects or thoughts, calm and profound, is the limb of single-mindedness. The remaining four supernormal powers are also like this. With regard to the essence of the dhyānas, either the inner mind gains understanding or the external marks are not clear, hence there is the sense of being concealed. Supernormal powers are the functioning of concentration; the functioning must be clear, and therefore they are all unconcealed.