釋禪波羅蜜次第法門 10.33

10.33

八、滅受想背捨者，背滅受、想諸心心數法，是名滅受想背捨。所以者何？諸佛弟子厭患散亂心故，入定休息，似涅槃法，安著身中，故名身證。

Eighth is the liberation of the cessation of perception and sensation: turning away from and extinguishing sensation, perception, and the various mental dharmas and mental concomitants is called the liberation of the cessation of perception and sensation. Why is this? Because the disciples of the Buddha, weary of the distracted mind, enter absorption to rest; resembling the dharma of nirvāṇa, it is placed and realized in the body, hence called 'bodily realization.'