The Tipiṭaka in Three Languages

Cittuppādakaṇḍa

Abhidhammapiṭaka · Dhammasaṅgaṇī · Vol. 34 · Section 58

[58] What on that occasion is lightness of mind (cittalahutā)? That which on that occasion is lightness (lahutā) of the aggregate of consciousness (viññāṇakkhandha), its quick transformability (lahupariṇāmatā), its non-sluggishness (adandhanatā), its non-inertness (avitthanatā) — this on that occasion is lightness of mind.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 3 other places