俱舍論疏 6.157

6.157

論「有時四蘊至及彼生等」，明四蘊為因共感一果，心、心所無有色蘊共一果故。

The treatise says: "Sometimes four aggregates [...] and their arising and so forth." This clarifies four aggregates serving as causes to jointly induce one fruit, because mind and mental factors do not share a single fruit together with the aggregate of form.