首楞嚴義疏注經 3.41

3.41

「何以故？若從通來，塞則聞滅，云何知塞？如因塞有，通則無聞，云何發明香臭等觸？若從根生，必無通塞。如是聞機本無自性。若從空出，是聞自當迴嗅汝鼻，空自有聞，何關汝入？」

"Why is this? If it came from unobstructedness, smelling would be extinguished during obstruction; how could one know obstruction? If it existed due to obstruction, there would be no smelling during unobstructedness; how could sensations like fragrance and stench be made clear? If it arose from the faculty, there would certainly be neither unobstructedness nor obstruction. Thus, the mechanism of smelling originally has no own-nature. If it emerged from space, this smelling should naturally turn back to smell your nose; if space itself possesses smelling, what does that have to do with your sense entrance?"