俱舍論頌疏論本 1.177

1.177

餘用遠速明者，餘謂前四眼、耳、鼻、舌，身、意外故，名之為餘。此四根中，先說眼、耳，取遠境故，鼻、舌不爾，是故後說。於眼、耳中，眼用遠故，在耳先說，遠見山河，不聞聲故。又眼用速，先遠見人撞擊鐘鼓，後聞聲故。鼻、舌二根用俱非遠。先說鼻者，謂由兩義：一速、二明。一速者，如對香美諸飲食時，鼻先臭香，舌後嘗味；二明者，鼻能取味中之細香，舌不能取香中之細味也。

As for 'the activities of the remaining are distant, swift, clear': 'The remaining' refers to the first four—eye, ear, nose, and tongue; because they are outside of body and mind, they are called 'the remaining'. Among these four faculties, the eye and ear are stated first because they grasp distant objects; the nose and tongue do not do so, and for this reason are stated after them. Between the eye and ear, because the activity of the eye reaches further, it is stated before the ear: from afar one sees mountains and rivers, but does not hear sound. Furthermore, the activity of the eye is swifter: from afar one first sees a person striking a bell or drum, and only afterward hears the sound. The activities of both the nose and tongue faculties are not distant. The nose is stated first due to two reasons: first, swiftness; second, clarity. As for swiftness: when facing fragrant and delicious foods and drinks, the nose first smells the fragrance, and the tongue only afterward tastes the flavor. As for clarity: the nose is able to grasp subtle fragrances within flavors, but the tongue cannot grasp subtle flavors within fragrances.