The Tipiṭaka in Three Languages

Arūpāvacaradukkusalattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 1752

[1752] Dependent on an unwholesome (akusala) phenomenon (dhamma) that is not of the formless sphere (na-arūpāvacara), an unwholesome phenomenon that is not of the formless sphere arises by root condition (hetu-paccaya): one. In all (conditions), one.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places