俱舍論記 20.63

20.63

「若執實有至能生功能」者，復牒計破。若執實有過去、未來，則果常有，業於彼果有何功能？若謂業能生果，果體新生，則所生果本無今有，其理自成。若一切法於三世中一切時有，誰因於誰果，有能生功能？

"If one adheres to real existence ... the capacity to produce": here [the text] again cites their position to refute it. If one adheres to the real existence of the past and future, then the fruit is permanently existent; what function could karma have with respect to that fruit? If you say that karma can produce the fruit and the substance of the fruit is newly born, then for the produced fruit to be originally non-existent and now existing naturally follows. If all dharmas exist at all times across the three times, what cause could possess the capacity to produce what fruit?