大乘義章 4.9

4.9

今次就彼內無記因，攝以為二：生因一種唯是生因，自分生故。隨說因、攝因、相違因、不相違因，此之四種是方便因。以有因中具有二因：以有最初起無記心，能生於後，判屬生因；以有外境，能生於心，是方便因。種殖之中亦具二因，相同以有。長因之中具攝二因：最初種子次第增長，生初威儀、工巧、變化，是其生因；餘名方便。自種因中亦具二因：以方便心望初威儀、工巧、變化，以說自種，如是自種即是生因；望後威儀、工巧、變化以說自種，是方便因，非親生故。共事因中亦具二因，同前以有乃至自種，總攝彼等為共事故（此二門竟）。

Now next, regarding the internal indeterminate causes, subsuming them into two: The single cause of generating is solely a generative cause, because it generates within its own class. The four causes—the cause by conventional expression, the cause of gathering, the contrary cause, and the non-contrary cause—are expedient causes. Within the cause by being, both causes are present: because the indeterminate mind arises initially and can produce what follows, this is determined to belong to the generative cause; because there is an external object that can give rise to the mind, this is an expedient cause. Within [the cause of] planting, both causes are also present, identical to the cause by being. Within the cause of growth, both causes are gathered: the initial seed gradually increasing to produce the initial deportment, craftsmanship, or transformation is its generative cause; the rest are called expedient. Within the cause of its own seed, both causes are also present: viewing the expedient mind in relation to the initial deportment, craftsmanship, or transformation to describe its own seed, such an 'own seed' is indeed a generative cause; viewing it in relation to subsequent deportment, craftsmanship, or transformation to describe its own seed, this is an expedient cause, because it does not directly generate them. Within the cause of shared function, both causes are also present, identical to the preceding causes from the cause by being down to the cause of its own seed, gathering them all together because they share a common function (this concludes the second section).