The Tipiṭaka in Three Languages

Cittuppādakaṇḍa

Abhidhammapiṭaka · Dhammasaṅgaṇī · Vol. 34 · Section 39

[39] Which, on that occasion, is right concentration (sammāsamādhi)? That which, on that occasion, is stability of the mind (citta), steadfastness, steadiness, non-wavering, non-distraction, the state of unwavering mentality, calm (samatha), the faculty of concentration (samādhindriya), the power of concentration (samādhibala), right concentration — this, on that occasion, is right concentration.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places