The Blessed Buddha once said! Bhikkhus, just as, among the trees of Jambudipa the rose-apple tree is declared to be the chief, similarly among all the states leading to enlightenment the understanding ability is declared to be the chief, that is, for the attainment of the supreme enlightenment! And what, Bhikkhus, are the states leading to enlightenment? The ability of Faith, Bhikkhus, is a state leading to enlightenment; The ability of Energy, Bhikkhus, is a state leading to enlightenment; The ability of Awareness, is a state leading towards enlightenment; The ability of Concentration, is a state leading to enlightenment; The ability of Understanding is a state leading to enlightenment; Why? They are conducive for, leads to and produce enlightenment... Friends just as, the rose-apple tree among the trees of Jambudipa is declared to be their chief, so too, among all the states leading to enlightenment, the ability of understanding is declared to be their chief, that is, for the attainment of enlightenment...