In hearing, there is no hearing. Hearing does not depend on hearing. Hearing is not born and it can never die. When sound arises, hearing does not create it. When sound diminishes, it is not extinguished by hearing. Nor is the nature of hearing created by the arising or diminishing of sound.
Just realize that hearing is unborn and undying. Hearing does not come and go. How can you realize the wisdom of this? Listen!
The Flatbed Sutra of Louie Wing