俱舍論記 15.145

15.145

「業與樂受至利益樂受」者，答。總有三，此即初解，此約利益以釋順義。因益樂果，故立順名。

Regarding "Karma ... with pleasant feeling ... benefits pleasant feeling," this is the answer. There are three in total; this is the first explanation, which explains the meaning of 'conducive' (anukūla) in terms of benefit. Because the cause benefits the pleasant result, the designation 'conducive' is established.