Bojjhaṅga sutta: Awakening Factors

“Mendicants, I will teach you seven principles that prevent decline. Listen and apply your mind well … And what are the seven principles that prevent decline? As long as the mendicants develop the awakening factor of mindfulness … investigation of principles … energy … rapture … tranquility … immersion … equanimity, they can expect growth, not decline.

As long as these seven principles that prevent decline last among the mendicants, and as long as the mendicants are seen following them, they can expect growth, not decline.”