仁王經疏 1.256

1.256

釋曰：第四釋通。亦有兩釋：一釋前徵，云非色如即是非非色如，應說三句，略故說二。一釋後徵，云如者空義，即是真性，空無所住故云不住。

Exposition: Fourth, the resolving explanation. There are also two explanations: The first explains the former inquiry, stating that the tathatā of non-matter is precisely the tathatā of non-non-matter; three phrases should have been stated, but for brevity only two are stated. The second explains the latter inquiry, stating that 'tathatā' means emptiness, which is the true nature; because emptiness has nowhere to abide, it is said to 'not abide.'