成唯識論述記 3.545

3.545

述曰：同熏之種，一生果時，餘亦應生，熏習同時勢力等故，如生果種故。不可說心種先生，餘觸等種，次第生果，此中比量易而可知。

The Commentary states: When one of the simultaneously perfumed seeds produces a fruit, the rest should also produce [their fruits], because their perfuming was simultaneous and their power is equal; just like the seed that produces the fruit. Therefore, it cannot be said that the mind-seed produces first and the remaining seeds of contact and so forth sequentially produce fruits. The inference here is easy and knowable.