首楞嚴義疏注經 6.153

6.153

“World-Honoured One, that Buddha Tathāgata praised me for having skillfully attained the Dharma-gate of perfect penetration, and in the great assembly conferred upon me the designation Avalokiteśvara (Contemplator of the World's Sounds). Because my contemplating and hearing was perfectly luminous throughout the ten directions, the name Avalokiteśvara pervades all worlds in the ten directions.”