首楞嚴義疏注經 8.421

8.421

通塞是彼鼻所取境，依此造業，依此受苦，故有二相。如是下歷根別受。為質為履者，質礙也，履猶通也。為餒為爽者，魚敗為餒。爽，乖差也。餘文可知。

Unobstructed and obstructed are the realms apprehended by that nose. Relying on these, one creates karma; relying on these, one undergoes suffering; hence there are two manifestations. "As these..." onward traces the separate undergoings through the faculties. To "become blockage and passage": *zhi* is obstruction; *lü* is like passage. To "become spoiled and corrupted": fish spoiling is *nei*; *shuang* is failure and corruption. The rest of the text is intelligible.