an.1.296 Aṅguttara Nikāya (Numbered Discourses)
Chapter One
296“One thing, mendicants, when developed and cultivated, leads solely to disillusionment, dispassion, cessation, peace, insight, awakening, and extinguishment.
What one thing?
Recollection of the Buddha.
This one thing, when developed and cultivated, leads solely to disillusionment, dispassion, cessation, peace, insight, awakening, and extinguishment.”