The Tipiṭaka in Three Languages

Cetasikadukkusalattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 1445

[1445] A wholesome phenomenon (dhamma) that is a mental factor (cetasika) is a condition for a wholesome phenomenon that is a mental factor by root condition (hetu-paccaya).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places