Aṅguttara Nikāya 4 16. Indriyavagga 152. Saddhābalasutta “Cattārimāni, bhikkhave, balāni. Katamāni cattāri? Saddhābalaṃ, vīriyabalaṃ, satibalaṃ, samādhibalaṃ—imāni kho, bhikkhave, cattāri balānī”ti. Dutiyaṃ.