注大乘入楞伽經 1.66

1.66

是時菩薩及諸天眾，咸念如來何因緣故，欣然而笑？身放光明，入三昧樂。周旋迴顧，觀夜叉王，疑必有以也。

At that time, the bodhisattvas and the devas all thought: For what cause and condition does the Tathāgata laugh with joy, emit light from his body, enter the bliss of samādhi, and turn his gaze around to look at the yakṣa king? They suspected that there must surely be a reason.