sn.35.142 Saṁyutta Nikāya (Linked Discourses)
Interior and Cause Are Not-Self
“Mendicants, the eye is not-self.The cause and reason that gives rise to the eye is also not-self.
Since the eye is produced by what is not-self, how could it be self?
The ear … nose … tongue … body …
mind is not-self.
The cause and reason that gives rise to the mind is also not-self.
Since the mind is produced by what is not-self, how could it be self?
Seeing this …
They understand: ‘… there is no return to any state of existence.’”