首楞嚴義疏注經 10.304

10.304

五陰之因，元妄所結，此即於妄想中立因緣性也。此因緣性妄中權立，欲令了法元無所有，是故同名一妄想耳。

The cause of the five aggregates is fundamentally formed by falsity; this is establishing the nature of causes and conditions within false imagination. This nature of causes and conditions is provisionally established within falsity to enable one to understand that dharmas are fundamentally non-existent; therefore they are collectively termed a single false imagination.