Samyuktagama (Sanskrit fragments) 259.8

259.8

舍利弗言：「若比丘未得無間等法，欲求無間等法，精勤思惟：『五受陰為病、為癰、為刺、為殺、無常、苦、空、非我。』所以者何？是所應處故。若比丘於此五受陰精勤思惟，得須陀洹果證。」

Śāriputra replied, “If a monk who has yet to attain direct realization wants to pursue direct realization, he diligently contemplates 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 stream entry.”