俱舍論頌疏論本 2.75

2.75

釋曰：眼、耳、意根取不至境，謂眼能見遠處諸色，眼中藥等則不能觀。謂耳能聞遠處聲響，逼耳根者則不能聞。意無色故，不可名至。故此三根取不至境。

The commentary says: The eye, ear, and mind faculties grasp objects that do not contact them. That is, the eye can see forms at a distance, while collyrium and the like in the eye cannot be seen. The ear can hear sounds at a distance, while what is pressed directly against the ear faculty cannot be heard. Because the mind is non-material, it cannot be called contacting. Therefore, these three faculties grasp objects that do not contact them.