The Tipiṭaka in Three Languages

Hetudukaatītattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 758

[758] A present (paccuppanna) phenomenon (dhamma) that is a root (hetu) is a condition (paccaya) for a present phenomenon that is a root by root condition (hetu-paccaya): three.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places