Patiṭṭhita sutta: Grounded

“Mendicants, when a mendicant is grounded in one thing the five faculties become developed, well developed. What one thing? Diligence. And what is diligence? It’s when a mendicant looks after their mind when it comes to defilements and things accompanied by defilements. As they do so the faculties of faith, energy, mindfulness, immersion, and wisdom are fully developed. That’s how when a mendicant is grounded in one thing the five faculties become developed, well developed.”