雜阿含經 259.p12

259.p12

Śāriputra replied, “Kauṣṭhila, someone who wants to realize the fruit of the arhat after realizing the fruit of non-returning should also diligently contemplate this, ‘The five acquired aggregates are like illnesses, abscesses, thorns, and killers. They are impermanent, painful, empty, and not self.’ Why is that? Because it’s appropriate for his situation. If a monk diligently contemplates these five acquired aggregates, he’ll realize the fruit of the arhat.”