The Tipiṭaka in Three Languages

Hetudukasekkhattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 497

[497] A trainee phenomenon (sekkha dhamma) that is a root (hetu) is a condition for a trainee phenomenon that is a root by immediacy condition (anantara-paccaya).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 4 other places