The Tipiṭaka in Three Languages

Suññatavāra

Abhidhammapiṭaka · Dhammasaṅgaṇī · Vol. 34 · Section 247

[247] What on that occasion is proficiency of the mental body (kāya-pāguññatā)? That which on that occasion is the proficiency, the proficientness, the state of being proficient of the aggregate of feeling (vedanākkhandha), of the aggregate of perception (saññākkhandha), of the aggregate of volitional formations (saṅkhārakkhandha) — this on that occasion is proficiency of the mental body.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places