Saññāsutta

Suttapiṭaka · Saṁyuttanikāya · Khandhavaggasaṁyutta · Vol. 17 · Section 271

[271] Bhikkhus, just as whatever radiance there is of the stars, all of it does not amount to a sixteenth part of the radiance of the moon — the radiance of the moon is declared the foremost among them; even so, bhikkhus, the perception of impermanence (aniccasaññā), when developed …

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.