俱舍論疏 6.323

6.323

論「如心心所至決定無有」，明色、不相應，四法如前。有緣四法一一各除相應因也，極少猶有二因所生。同其外道一因生法，決定無也。

On the Śāstra's: "Just like mind and mental factors […] up to: there is definitely none": this clarifies that for matter and dissociated [dharmas], the four dharmas are as before. For each of the four dharmas possessing an intentional object, the associated cause (samprayuktaka-hetu) is excluded; at the minimum, they still arise from two causes. Dharmas arising from a single cause, as held by non-Buddhists, definitely do not exist.