如是我聞：Thus I have heard: 一時，佛住舍衛國、祇樹、給孤獨園。One time, the Buddha was staying at Anāthapiṇḍada’s Park in Jeta’s Grove of Śrāvastī.

爾時，世尊告諸比丘：It was then that the Bhagavān addressed the monks, 「於色當正思惟，觀色無常，如實知。
觀色 → 觀 (大, cbeta)“One should correctly contemplate form, observe that form is impermanent, and truly know it. 所以者何？Why is that? 比丘，於色正思惟，觀色無常，如實知者，於色欲貪斷。
觀色 → 觀 (宋) | 知者 → 者 (宋)Monks, when someone correctly contemplates form, observes it to be impermanent, and truly knows it, they stop desire and greed for form. 欲貪斷者，說心解脫。When someone stops desire and greed, I say their mind is liberated.

「如是受⋯想⋯行⋯識當正思惟，觀識無常如實知。“Thus, one should correctly contemplate feeling … conception … volition … awareness, observe that awareness is impermanent, and truly know it. 所以者何？Why is that? 於識正思惟，觀識無常者，則於識欲貪斷。When someone correctly contemplates awareness, observes it to be impermanent[, and truly knows it], they stop desire and greed for awareness. 欲貪斷者，說心解脫。When someone stops desire and greed, I say their mind is liberated.

「如是心解脫者，若欲自證，則能自證：“In this way, someone who wants to realize the mind’s liberation for themselves can realize: 『我生已盡，梵行已立，所作已作。』‘My births have been ended, the religious practice has been established, and the task has been accomplished.’ 自知不受後有。」They themselves know they won’t be subject to a later existence.”

(如是正思惟無常，苦、空、非我亦復如是。)
(如是正思惟無常、苦、空、非我亦復如是。) → () (yinshun)

時，諸比丘聞佛所說歡喜，奉行。When the monks heard what the Buddha taught, they rejoiced and approved.