大方廣圓覺修多羅了義經 1.114

1.114

「善男子！若諸眾生修於禪那，先取數門，心中了知生住滅念，分齊頭數，如是周遍四威儀中，分別念數無不了知，漸次增進乃至得知百千世界一滴之雨，猶如目覩所受用物；非彼所聞一切境界終不可取。是名三觀初首方便。若諸眾生，遍修三種勤行精進，即名如來出現于世；若後末世鈍根眾生心欲求道，不得成就由昔業障，當勤懺悔常起希望，先斷憎、愛、嫉妬、諂曲，求勝上心，三種淨觀隨學一事，此觀不得復習彼觀，心不放捨漸次求證。」

"Kulaputra, if sentient beings cultivate dhyāna, they should first adopt the gateway of counting, knowing clearly within their minds the arising, abiding, and cessation of thoughts, as well as their demarcations and numbers. In this way, pervading all four postures, they are fully aware of every distinct number of thoughts. Gradually advancing, they will come to know even a single drop of rain in hundreds of thousands of worlds, just as if witnessing an object used before their eyes. Any realm that they have not heard of must ultimately not be accepted. These are called the initial upāyas of the three contemplations. If sentient beings fully cultivate all three, diligently practicing with vigor, this is called a Tathāgata appearing in the world. If in the latter age dull-rooted sentient beings whose minds wish to seek the Path fail to achieve it due to past karmic obstacles, they should diligently repent, constantly giving rise to hope. First cutting off hatred, love, jealousy, and deceitfulness, and seeking the supreme mind, they should study whichever of the three pure contemplations they choose. If this contemplation is not attained, they should practice another, never abandoning it in their hearts, gradually seeking realization."