注大乘入楞伽經 1.64

1.64

此明如來普觀眾會，欲為說法。言慧眼非以肉眼者，為肉眼礙而非通故，不能普觀，故以慧眼觀之。於其眉間、髀、脇、腰、頸及以肩、臂德字之中，一一毛孔皆放光明者，如來凡放光必表法，非苟然也。今此會，眉間七處俱放光明，豈非表圓明中道，離遍計依他，成就眾德乎！時，虛空中釋梵諸天，遙見如來坐如妙高楞伽山頂，欣然大笑。笑非無所以也。

This explains that the Tathāgata gazed broadly upon the assembly, wishing to preach the Dharma for them. The statement that he used the eye of wisdom and not the physical eye is because the physical eye is obstructed and not penetrative, hence unable to gaze broadly; therefore he observed with the eye of wisdom. "From between his eyebrows, his thighs, flanks, waist, neck, shoulders, arms, and from the svastika emblem, from every single pore, he emitted rays of light": whenever the Tathāgata emits light, it always expresses a principle and is never arbitrary. In this assembly, light was emitted from the seven places including the space between the eyebrows; does this not symbolize the perfectly luminous Middle Way, free from the imagined and dependent natures, perfecting all virtues? At that time, the Indras, Brahmās, and devas in the sky saw from afar the Tathāgata seated upon the summit of Mount Laṅkā, which resembled Mount Meru, laughing aloud with joy. His laughter was not without reason.