The Tipiṭaka in Three Languages

Parittattika

Abhidhammapiṭaka · Paṭṭhāna (2) · Vol. 41 · Section 1515

[1515] A measureless phenomenon (appamāṇa dhamma) is a condition for a measureless phenomenon by presence condition (atthi-paccaya): That is, one measureless aggregate (khandha) is a condition for three aggregates.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places