Aniccasutta

Suttapiṭaka · Saṁyuttanikāya · Khandhavaggasaṁyutta · Vol. 17 · Section 379

[379] At Sāvatthī. Sitting to one side, the Venerable Rādha said this to the Blessed One: "'Impermanent, impermanent (anicca),' venerable sir, it is said. What now, venerable sir, is impermanent?" "Form (rūpa), Rādha, is impermanent; feeling (vedanā) is impermanent; perception (saññā) … consciousness (viññāṇa) is impermanent. Seeing thus … he understands: '… there is no more for this state of being.'"

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 17 · Section 44 — Anattasutta