佛說處處經 1.28

1.28

The Buddha said: "Having already attained the Way of the arhat, one cannot turn back. He then repents to himself, saying: 'How foolish of me to have directly taken the Way of the arhat!' The Buddha then explains the matter to him: 'Your wisdom surpasses other arhats, but your wisdom does not reach that of a Buddha. An arhat cuts off his own suffering but does not cut off the suffering of others; the Buddha's fundamental practice cuts off his own suffering and also cuts off the suffering of others. Therefore, they do not equal one another.'"