श्रोत्रं वै ग्रहः स शब्देनातिग्राहेणगृहीतः श्रोत्रेण हि शब्दाञ्शृणोति ॥ ६ ॥
In plain words
The ear is a grasper — seized by sound itself, its own over-grasper. Because it is through the ear that we hear.
Close to the Sanskrit
The ear, indeed, is a grasper; it is seized by sound as the over-grasper; for by the ear one hears sounds.