The Tipiṭaka in Three Languages

Hetudukaparittattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 574

[574] A measureless (appamāṇa) phenomenon that is a root (hetu) is a condition, by immediacy condition (anantara-paccaya), for a measureless phenomenon that is a root: nine.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places