And how are the seven awakening factors developed and cultivated so as to fulfill knowledge and freedom? 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 the seven awakening factors are developed and cultivated so as to fulfill knowledge and freedom.”

Linked Discourses 54.14 Chapter Two With Ānanda (2nd)

Then Venerable Ānanda went up to the Buddha, bowed, and sat down to one side. The Buddha said to him: “Ānanda, is there one thing that, when developed and cultivated, fulfills four things; and those four things, when developed and cultivated, fulfill seven things; and those seven things, when developed and cultivated, fulfill two things?” “Our teachings are rooted in the Buddha. …” “There is, Ānanda.