首楞嚴義疏注經 3.42

3.42

先破境生，通塞互破可知。發明，顯了也。次破根生，根生則無境，無境則無根，由塵發知故。機亦根也。次破空生，前則聞境，歸則嗅根，空自聞香，汝鼻何用？

First, refuting arising from the realm: the mutual refutation of unobstructedness and obstruction can be understood. "Made clear" means manifested clearly. Next, refuting arising from the faculty: if it arose from the faculty, then there would be no realm; without a realm there would be no faculty, because awareness is produced by dust. "Mechanism" also means faculty. Next, refuting arising from space: looking forward it would smell the realm, and returning it would smell the faculty; if space itself smells fragrance, what use is your nose?