SA 473（四七三） 禅

Thus have I heard:

At one time the Buddha was staying at the Kalandaka Bamboo Grove in Rājagṛha.

At that time, a certain bhikṣu was alone in a quiet place, contemplating in meditation, thinking: "The World-Honored One has spoken of three kinds of feelings - pleasant feelings, painful feelings, and neither-painful-nor-pleasant feelings. He has also said that all feelings are suffering. What is the meaning of this?" Having thought this, the bhikṣu rose from his meditation, went to where the Buddha was, bowed his head at the Buddha's feet, stood to one side, and said to the Buddha: "World-Honored One! When I was alone in a quiet place, contemplating in meditation, I thought: 'The World-Honored One has spoken of three kinds of feelings - pleasant feelings, painful feelings, and neither-painful-nor-pleasant feelings. He has also said that all feelings are suffering. What is the meaning of this?'"

The Buddha told the bhikṣu: "I say that all feelings are suffering because all conditioned phenomena are impermanent and all conditioned phenomena are subject to change."

At that time, the World-Honored One spoke a verse, saying:

Knowing that all conditioned phenomena are impermanent and subject to change, I say
that all feelings are suffering, as realized by the Perfectly Enlightened One. Bhikṣus
diligently apply skillful means, with right knowledge unshakable, and skillfully understand all feelings
Having understood all feelings, one exhausts all taints in this very life, and
upon the death of the body, one is not subject to rebirth, eternally
dwelling in parinirvāṇa.

Having spoken this sūtra, the Buddha finished. The bhikṣus, having heard the Buddha's teaching, rejoiced and upheld it.