唯識二十論述記 2.57

2.57

述曰：顯不合因。若有方分，可說有合得成六分；既無方分，不得相合，故離前來遮破我失。

The Commentary says: This shows the reason for non-conjunction. If they had spatial divisions, one could say they have conjunction and could form six divisions; since they lack spatial divisions, they cannot conjoin, and are thus free from the preceding fault raised to refute me.