佛說觀佛三昧海經 1.39

1.39

「如是父王，我涅槃後諸眾生等，業行若干、意想若干，所識不同，隨彼眾生心想所見，應當次第教其繫念，如我住世不須繫念。譬如日出冥者皆明，惟無目者而無所覩。

"Thus, Royal Father, after my parinirvāṇa, sentient beings will have various karmic deeds, various thoughts and imaginations, and diverse perceptions. In accordance with what those sentient beings see through their mind's thoughts, one should teach them sequentially to bind their thoughts. While I dwell in the world, there is no need to bind one's thoughts. It is like the rising of the sun: all that is dark becomes bright, except for the blind, who see nothing.