Vatthasutta

Suttapiṭaka · Saṁyuttanikāya · Mahāvaggasaṁyutta · Vol. 19 · Section 386

[386] "Friends (āvuso), if it occurs to me, 'the equanimity (upekkhā) factor of awakening (bojjhaṅga),' it occurs to me, 'it is measureless'; it occurs to me, 'it is well aroused.' While it persists, I know: 'It persists.' And if it passes away in me, I know: 'It passes away in me with this as its condition.'"

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.