VaggaVacībhedakathā

Abhidhammapiṭaka · Kathāvatthu · Vol. 37 · Section 584

[584] "Knowing [it as] 'suffering' (dukkha), does one utter the speech 'suffering'?" — "Yes." "Knowing [it as] 'cessation' (nirodho), does one utter the speech 'cessation'?" — "It should not be said thus." …

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 2 other places