Saññāsutta

Suttapiṭaka · Saṁyuttanikāya · Khandhavaggasaṁyutta · Vol. 17 · Section 266

[266] Just as, bhikkhus, whatever rafters there are of a peaked house, all of them go to the peak, slope towards the peak, converge upon the peak, and the peak is declared the chief of them; even so, bhikkhus, the perception of impermanence (aniccasaññā), when developed … .

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.