MahāvaggavaggaSabbamatthītikathā

Abhidhammapiṭaka · Kathāvatthu · Vol. 37 · Section 347

[347] S. Having been future (anāgata), does it become present (paccuppanna); having been present, does it become past (atīta)? P. Yes. S. Is the future that very same thing, the present that same thing, the past that same thing? P. It should not be said thus. … S. Is the future that very same thing, the present that same thing, the past that same thing? P. Yes. S. Having been, it is; having been, it is? P. It should not be said thus. … S. Having been, it is; having been, it is? P. Yes. S. Not having been, it is not; not having been, it is not? P. It should not be said thus. …

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.