Vibhaṅgasutta

Suttapiṭaka · Saṁyuttanikāya · Nidānavaggasaṁyutta · Vol. 16 · Section 15

[15] And what, bhikkhus, is consciousness (viññāṇa)? There are these six classes of consciousness (viññāṇakāyā), bhikkhus: eye-consciousness, ear-consciousness, nose-consciousness, tongue-consciousness, body-consciousness, mind-consciousness. This, bhikkhus, is called consciousness.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 35 · Section 258 — Paccayākāravibhaṅgasuttantabhājanīya