Paṭhamavasa sutta: Mastery of the Mind (1st)

“Mendicants, a mendicant with seven qualities masters their mind and is not mastered by it. What seven? It’s when a mendicant is skilled at immersion, skilled in entering immersion, skilled in remaining in immersion, skilled in emerging from immersion, skilled in positivity for immersion, skilled in the territory of immersion, and skilled in projecting the mind purified by immersion. A mendicant with these seven qualities masters their mind and is not mastered by it.”