首楞嚴義疏注經 2.320

2.320

此根境識從妄心有，其體元無，如空中華翳病故見。下文云「見聞如幻翳，三界故空華。」此則我說即是空。

These faculties, objects, and consciousnesses exist from the deluded mind, but their substance is fundamentally non-existent, just as flowers in space are seen due to cataracts. The text below says: "Seeing and hearing are like an illusory cataract, / The three realms are therefore flowers in space." This is "what I say is emptiness."