[209] Therein, what is right concentration (sammāsamādhi)?
That which is stability of the mind (citta) … right concentration, the concentration factor of awakening (samādhisambojjhaṅga), a factor of the path (magga), included in the path — this is called right concentration.
This is called the way of practice leading to the cessation of suffering (dukkhanirodhagāminī paṭipadā); the remaining phenomena (dhammā) are associated with the way of practice leading to the cessation of suffering. …
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.