The Tipiṭaka in Three Languages

Sekkhattika

Abhidhammapiṭaka · Paṭṭhāna (2) · Vol. 41 · Section 1241

[1241] A phenomenon (dhamma) that is neither-of-the-trainee-nor-of-the-adept (neva-sekkha-nāsekkha) is a condition for a phenomenon of the adept (asekkha) by object condition (ārammaṇa-paccaya): Nibbāna is a condition for the fruition (phala) of the adept by object condition.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 3 other places