首楞嚴義疏注經 1.447

1.447

About to explain the benefits of the Dharma, it was fitting first to manifest an announcement to startle them into faith. Previously, emitting light from his crown signified that the essence is beyond expression. Here, emitting it from his mouth is intended to reveal verbal explanation. In the functioning of sound and form, there is nothing that is not the essence of wisdom; the various kinds and hundreds of thousands [of rays] are replete with all virtues, destroying the darkness of avidyā like the illumination of the sun.