首楞嚴義疏注經 3.107

3.107

破耳往聲處也。初二句牒，如我下破。初舉喻，佛喻耳根，祇園喻鼓，城喻阿難。汝聞下例破。耳根既往鼓處，阿難應闕耳根，鐘聲與鼓齊鳴，不合更聞鐘響，況餘聲耶。

This refutes the ear going to the sound's place. The first two sentences take up [the view]; from 'it would be like me' downward refutes it. First, adducing an analogy: the Buddha symbolizes the ear faculty; the Jeta Grove symbolizes the drum; the city symbolizes Ānanda. From 'when you hear' downward refutes by analogy. Since the ear faculty has already gone to the drum's place, Ānanda should lack an ear faculty; when the bell sound sounds at the same time as the drum, it would not be fitting to hear the bell's resonance again, let alone other sounds.