MahāvaggavaggaMahāvagga

Abhidhammapiṭaka · Kathāvatthu · Vol. 37 · Section 30

[30] Volitional formations (saṅkhārā) are found in the sense of a real and ultimate fact, and consciousness (viññāṇa) is found … and form (rūpa) is found … and feeling (vedanā) is found … and perception (saññā) is found in the sense of a real and ultimate fact …

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places