Majjhima Nikaya (Coleção dos Discursos Médios) 4:15
SUJATOyoniso ca kho, bhikkhave, manasikaroto anuppannā ceva āsavā na uppajjanti, uppannā ca āsavā pahīyanti.
When you apply the mind rationally, defilements don’t arise, and those that have already arisen are given up.