Nikkhepakaṇḍa

Abhidhammapiṭaka · Dhammasaṅgaṇī · Vol. 34 · Section 869

[869] Therein, what is exertion (paggāha)? That which is the mental (cetasika) arousing of energy (vīriyārambha) … right effort (sammāvāyāma) — this is called exertion. Therein, what is non-distraction (avikkhepa)? That which is stability (ṭhiti) of the mind (citta) … right concentration (sammāsamādhi) — this is called non-distraction.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.