首楞嚴義疏注經 1.278

1.278

瑠璃喻根，眼喻於識。眼根色淨不能礙心，同瑠璃椀不礙於眼，隨照一境，心隨根知。若此成立，乍觀可爾，洎乎推破，同喻不成。

Lapis lazuli illustrates the faculties; the eyes illustrate consciousness. The physical matter of the eye faculty being clear cannot obstruct the mind, just as a lapis lazuli bowl does not obstruct the eyes; as soon as it illuminates an object, the mind knows in accordance with the faculty. If it is established like this, at first glance it may seem plausible, but when subjected to refutation, the shared analogy fails to hold.