Arūpāvacaradukkusalattika

Abhidhammapiṭaka · Paṭṭhāna (5) · Vol. 44 · Section 1756

[1756] A phenomenon (dhamma) of the formless sphere (arūpāvacara) that is indeterminate (abyākata) is a condition, by root condition (hetu-paccaya), for a phenomenon of the formless sphere that is indeterminate. Three. A phenomenon not of the formless sphere that is indeterminate is a condition, by root condition, for a phenomenon not of the formless sphere that is indeterminate.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places