The Tipiṭaka in Three Languages

Hetuhetusaṁpayuttadukkusalattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 1030

[1030] An unwholesome (akusala) phenomenon (dhamma) that is both a root (hetu) and associated with a root (hetusampayutta) is a condition, by root condition (hetu-paccaya), for an unwholesome phenomenon that is both a root and associated with a root.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places