釋禪波羅蜜次第法門 9.18

9.18

Furthermore, the nine notions have two kinds [of practitioners]: first, those of sharp faculties; second, those of dull faculties. If it is a person of sharp faculties, mentally conceptualizing in advance the matters of death, distension, and so on, all are accomplished. If it is a person of dull faculties, conceptualizing in advance is not accomplished; one must see a newly deceased person at the place of the corpse, and having seized these marks, tie the mind to cultivating and practicing. Once the marks are seen clearly and the mental notion is accomplished, samādhi is immediately generated; afterward, even though separated from the corpse, according to the notion one immediately sees it.