釋禪波羅蜜次第法門 2.132

2.132

二、精進者，有二種：一、身精進；二、心精進。行者若能修十二頭陀，即是具足身心精進。如佛告迦葉：「阿蘭若比丘，遠離二著，形心清淨，行頭陀。頭陀者，有十二事：一、阿蘭若處；二、常行乞食；三、次第乞食；四、受一食法；五、節量食；六、中後不飲漿；七、著弊衣；八、但三衣；九、塚間住；十、樹下止；十一、露地坐；十二、常坐不臥。是名十二頭陀。」如《頭陀經》中所明，是中應廣說。頭陀者，名抖擻，抖擻身心諸不善法故。若修禪時，行此等法，是名不放逸行，具足身心精進。當知此人能得三乘聖果，何況世間禪定。

Second, as for vigor, there are two kinds: first, physical vigor; second, mental vigor. If a practitioner is able to cultivate the twelve dhūtas, that is possessing complete physical and mental vigor. As the Buddha told Kāśyapa: 'An araṇya monk, being far removed from the two attachments, pure in body and mind, practices the dhūtas. As for the dhūtas, there are twelve practices: first, dwelling in an araṇya; second, always practicing begging for food; third, begging for food sequentially; fourth, observing the practice of a single meal; fifth, eating measured amounts of food; sixth, not drinking juices after noon; seventh, wearing soiled robes; eighth, possessing only three robes; ninth, staying among charnel grounds; tenth, lodging beneath a tree; eleventh, sitting in the open; twelfth, always sitting and not lying down. These are called the twelve dhūtas.' As explained in the Dhūta Sūtra, this should be expounded broadly here. 'Dhūta' means shaking off, because it shakes off all unwholesome states of body and mind. If when cultivating dhyāna one practices these methods, this is called non-negligent practice, possessing complete physical and mental vigor. One should know that this person can attain the noble fruits of the three vehicles, let alone mundane dhyāna-concentrations.