成唯識論演祕 3.38

3.38

結無因緣。若其前後，後能生果，可有因緣，既多同起，而無起者，故無因緣。

This concludes that there is no causal condition. If sequentially the subsequent could produce a fruit, there could be a causal condition; but since many arise simultaneously and none can generate, there is no causal condition.