The Tipiṭaka in Three Languages

Hetudukaatītāraṁmaṇattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 774

[774] A phenomenon (dhamma) that is a root (hetu) and has a past object is a condition, by way of root condition (hetu-paccaya), for a phenomenon that is a root and has a past object: three.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places