Kūṭāgārasutta

“Seyyathāpi, bhikkhave, kūṭāgārassa yā kāci gopānasiyo, sabbā tā kūṭaninnā kūṭapoṇā kūṭapabbhārā; evameva kho, bhikkhave, bhikkhu satta bojjhaṅge bhāvento satta bojjhaṅge bahulīkaronto nibbānaninno hoti nibbānapoṇo nibbānapabbhāro.

“Mendicants, the rafters of a bungalow all slant, slope, and incline to the peak. In the same way, a mendicant who develops and cultivates the seven awakening factors slants, slopes, and inclines to extinguishment.

Kathañca, bhikkhave, bhikkhu satta bojjhaṅge bhāvento satta bojjhaṅge bahulīkaronto nibbānaninno hoti nibbānapoṇo nibbānapabbhāro? Idha, bhikkhave, bhikkhu satisambojjhaṅgaṁ bhāveti vivekanissitaṁ virāganissitaṁ nirodhanissitaṁ vossaggapariṇāmiṁ …pe… upekkhāsambojjhaṅgaṁ bhāveti vivekanissitaṁ virāganissitaṁ nirodhanissitaṁ vossaggapariṇāmiṁ. Evaṁ kho, bhikkhave, bhikkhu satta bojjhaṅge bhāvento satta bojjhaṅge bahulīkaronto nibbānaninno hoti nibbānapoṇo nibbānapabbhāro”ti. Sattamaṁ.

And how does a mendicant who develops the seven awakening factors slant, slope, and incline to extinguishment? It’s when a mendicant develops the awakening factors of mindfulness, investigation of principles, energy, rapture, tranquility, immersion, and equanimity, which rely on seclusion, fading away, and cessation, and ripen as letting go. That’s how a mendicant who develops and cultivates the seven awakening factors slants, slopes, and inclines to extinguishment.”