雜阿含經 104.p40

104.p40

Śāriputra said, “Good, Yamaka! Good! You should thus answer them. Why is that? The form of an arhat who has ended the contaminants is impermanent. What’s impermanent is painful. If it’s impermanent and painful, it’s something that arises and ceases. Feeling, conception, volition, and consciousness are likewise.”