The Tipiṭaka in Three Languages

Hetudukasekkhattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 509

[509] A phenomenon (dhamma) that is a root (hetu) and beyond training (asekkha) is a condition for a phenomenon that is a root and beyond training, by root condition (hetu-paccaya): three.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places