成唯識論述記 3.492

3.492

述曰：下答有三，初總答；次別答；後釋無記名，此總答也。若善、惡性，必非異熟，下別答之。

The Commentary states: The answer below has three parts: first, a general answer; next, specific answers; and finally, explaining the name 'indeterminate'. This is the general answer. If it were wholesome or unwholesome, it would definitely not be maturation, as answered specifically below.