“Mendicants, due to not understanding and not penetrating four things, both you and I have wandered and transmigrated for such a very long time. What four? Noble ethics, immersion, wisdom, and freedom. These noble ethics, immersion, wisdom, and freedom have been understood and comprehended. Craving for continued existence has been cut off; the leash to existence is ended; now there’ll be no more future lives.”
That is what the Buddha said. Then the Holy One, the Teacher, went on to say:
“Ethics, immersion, and wisdom, and the supreme freedom: these things have been understood by Gotama the renowned.
And so the Buddha, having insight, explained this teaching to the mendicants. The teacher made an end of suffering, seeing clearly, he is fully quenched.”
Numbered Discourses 4.2 1. At Wares Village Fallen
“Someone without four things is said to have ‘fallen from this teaching and training’. What four? Noble ethics, immersion, wisdom, and freedom. Someone without these four things is said to have ‘fallen from this teaching and training’.