Kathāvatthusutta
“Tīṇimāni, bhikkhave, kathāvatthūni. Katamāni tīṇi? Atītaṁ vā, bhikkhave, addhānaṁ ārabbha kathaṁ katheyya: ‘evaṁ ahosi atītamaddhānan’ti. Anāgataṁ vā, bhikkhave, addhānaṁ ārabbha kathaṁ katheyya: ‘evaṁ bhavissati anāgatamaddhānan’ti. Etarahi vā, bhikkhave, paccuppannaṁ addhānaṁ ārabbha kathaṁ katheyya: ‘evaṁ hoti etarahi paccuppannamaddhānan’ti.
Topics of Discussion
“There are, mendicants, these three topics of discussion. What three? You might discuss the past: ‘That is how it was in the past.’ You might discuss the future: ‘That is how it will be in the future.’ Or you might discuss the present: ‘This is how it is at present.’