BojjhaṅgavibhaṅgasuttantabhājanīyaAbhidhaṁbhājanīyaSatisaṁbojjhaṅga

Abhidhammapiṭaka · Vibhaṅga · Vol. 35 · Section 559

[559] Therein, which is the awakening factor of concentration (samādhi-sambojjhaṅga)? That which is stability of the mind (citta) … right concentration (sammāsamādhi), the awakening factor of concentration, a factor of the path (maggaṅga), included in the path (maggapariyāpanna) — this is called the awakening factor of concentration.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places