And moreover, sir, how the Buddha teaches the different degrees of responsiveness to instruction is unsurpassable. There are these four degrees of responsiveness to instruction.

The Buddha knows by investigating inside another individual: ‘By practicing as instructed this individual will, with the ending of three fetters, become a stream-enterer, not liable to be reborn in the underworld, bound for awakening.’ The Buddha knows by investigating inside another individual: ‘By practicing as instructed this individual will, with the ending of three fetters, and the weakening of greed, hate, and delusion, become a once-returner. They will come back to this world once only, then make an end of suffering.’ The Buddha knows by investigating inside another individual: ‘By practicing as instructed this individual will, with the ending of the five lower fetters, be reborn spontaneously. They will be extinguished there, and are not liable to return from that world.’ The Buddha knows by investigating inside another individual: ‘By practicing as instructed this individual will realize the undefiled freedom of heart and freedom by wisdom in this very life, and live having realized it with their own insight due to the ending of defilements.’

This is unsurpassable when it comes to the different degrees of responsiveness to instruction.