首楞嚴義疏注經 5.135

5.135

際時會遇也，遭時遇佛，從茲得道，始覺合本若不曾迷，故云本悟。悟，覺也。既不曾迷，唯是一覺，夫何更有見聞之異，故云未聞無有差別，此略舉六中之耳根也。阿難所請，意在此根，微露其機求佛顯發。如來知微，勅眾各說悟門，觀音、文殊承機述揀，感應相濟，化道曲成，于今受賜，豈得忘本。

'Opportune' means the right time, and 'meeting' means encountering. Meeting the Buddha in an opportune time, and from this attaining the Way, initial awakening unites with original awakening as if one had never been deluded; hence it says 'original awakening'. Awakening means realization. Since one was never deluded, there is only the one awakening; how could there still be the difference of seeing and hearing? Thus he says: 'there would be no difference from not having heard them'—here briefly citing the ear faculty among the six. Ānanda's request is aimed at this faculty; he subtly discloses his capacity, seeking the Buddha's revelation. The Tathāgata, knowing the subtle sign, orders the assembly to each speak of their gates of awakening; Avalokiteśvara and Mañjuśrī respond to the capacity by narrating and selecting. Resonance and response aid each other, skillfully completing the course of conversion; since we receive the benefit today, how could we forget the root?