Ñāṇavatthusutta

Suttapiṭaka · Saṁyuttanikāya · Nidānavaggasaṁyutta · Vol. 16 · Section 126

[126] Dwelling at Sāvatthī ... "Bhikkhus, I will teach you the seventy-seven cases of knowledge (ñāṇavatthu). Listen to that and attend well; I will speak." "Yes, venerable sir," those bhikkhus replied to the Blessed One.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 16 · Section 4 — Vibhaṅgasutta