The Tipiṭaka in Three Languages

Hetudukkusalattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 2

[2] Dependent on a wholesome (kusala) phenomenon (dhamma) that is a root (hetu), a wholesome phenomenon that is a root arises by object condition (ārammaṇa-paccaya). …

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places