And how is a mendicant dedicated to wakefulness? It’s when a mendicant practices walking and sitting meditation by day, purifying their mind from obstacles. In the first watch of the night, they continue to practice walking and sitting meditation. In the middle watch, they lie down in the lion’s posture—on the right side, placing one foot on top of the other—mindful and aware, and focused on the time of getting up. In the last watch, they get up and continue to practice walking and sitting meditation, purifying their mind from obstacles. This is how a mendicant is dedicated to wakefulness. A mendicant who possesses these four qualities can’t decline, and has drawn near to extinguishment.

Established in ethics, restrained in the sense faculties, eating in moderation, and dedicated to wakefulness;

a mendicant lives like this, with keen energy, tireless all night and day, developing skillful qualities, for the sake of sanctuary from the yoke.

A mendicant who loves diligence, seeing fear in negligence, can’t decline, and has drawn near to extinguishment.”

Numbered Discourses 4.38 4. Situations Withdrawn