The Tipiṭaka in Three Languages

Ayonisomanasikārasutta

Suttapiṭaka · Saṁyuttanikāya · Mahāvaggasaṁyutta · Vol. 19 · Section 447

[447] "…the unarisen awakening factor of mindfulness (satisambojjhaṅga) arises, and the arisen awakening factor of mindfulness goes to the fulfillment of its development … the unarisen awakening factor of equanimity (upekkhāsambojjhaṅga) arises, and the arisen awakening factor of equanimity goes to the fulfillment of its development."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 4 other places