Pasūrasuttanidesanidadesa

Suttapiṭaka · Khuddakanikāya · Mahāniddesa · Vol. 29 · Section 310

[310] **"And they assert: 'Only this is true'"** means: they assert, speak, declare, explain, and express thus: "The world is eternal; only this is true, anything else is vain." "The world is not eternal … the Tathāgata neither exists nor does not exist after death; only this is true, anything else is vain" — thus they assert, speak, declare, explain, and express. Therefore it is said: **"and they assert: 'Only this is true.'"**

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 29 · Section 602 — Mahāviyūhasuttanidadesa