The Tipiṭaka in Three Languages

Hetudukavipākattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 173

[173] A root (hetu) that is a phenomenon (dhamma) neither a result (vipāka) nor productive of results is a condition, by root condition (hetu-paccaya), for a root that is a phenomenon neither a result nor productive of results: three. …

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places