an.3.136 Aṅguttara Nikāya (Numbered Discourses)

Arising

all things are not-self.
A Realized One understands this and comprehends it,
“Mendicants, whether Realized Ones arise or not, this law of nature persists, this regularity of natural principles, this invariance of natural principles:
all conditions are impermanent.
A Realized One understands this and comprehends it,
then he explains, teaches, asserts, establishes, clarifies, analyzes, and reveals it:
‘All conditions are impermanent.’
Whether Realized Ones arise or not, this law of nature persists, this regularity of natural principles, this invariance of natural principles:
all conditions are suffering.
A Realized One understands this and comprehends it,
then he explains, teaches, asserts, establishes, clarifies, analyzes, and reveals it:
‘All conditions are suffering.’
Whether Realized Ones arise or not, this law of nature persists, this regularity of natural principles, this invariance of natural principles:
then he explains, teaches, asserts, establishes, clarifies, analyzes, and reveals it:
‘All things are not-self.’”