俱舍論記 6.133

6.133

「於欲界中至及彼生等」者，此下約三界五蘊多少，同時相望為俱有因，顯異熟因同感一果。於欲界中，有時一蘊為異熟因共感一果，謂行蘊中有記得，及彼得上四相。

Regarding "In the desire realm... and their origination, etc.": below this, in terms of the number of the five skandhas across the three realms, viewed reciprocally as coexistent causes at the same time, it is shown that causes of maturation jointly bring about a single fruit. In the desire realm, sometimes one skandha serves as the cause of maturation jointly bringing about a single fruit; this refers to the indeterminate acquisition (prāpti) within the saṃskāra-skandha, along with the four primary characteristics on that [acquisition].