首楞嚴義疏注經 1.218

1.218

佛告阿難：「如汝所言，身在講堂，戶牖開豁，遠矚林園。亦有眾生在此堂中不見如來、見堂外者。」

The Buddha told Ānanda: "As you have said, when the body is in the lecture hall and the doors and windows are open wide, one gazes far off at the grove and park. Could there also be a sentient being in this hall who does not see the Tathāgata, but sees outside the hall?"