《中部》第八十二經，記述 Raṭṭhapāla 出家的因緣，以及他後來向拘樓國王闡述促使他捨棄優渥生活的四項真理——世間無常流轉、無所依怙、一切終將舍離、貪愛使人永不知足。

The eighty-second discourse of the Majjhima Nikāya, recounting Raṭṭhapāla’s ordination and his later explanation to a Kuru king of the four truths that led him to renounce a life of privilege — that the world is in constant flux, without a protector, that nothing can be kept, and that craving leaves it forever unsatisfied.