首楞嚴義疏注經 3.262

3.262

身觸俱非也。以相即故遂令俱非，則觸不成觸、身不成身也。應立量云：汝之身根定非身根，以有知故，如所執觸。汝所執觸定非是觸，以有知故，如汝身根。將汝一因成我四量，令汝相即、亦令俱亡。身觸下二句結無二位。下破離合。

Both body and touch are negated. Because of mutual identity, it leads to mutual negation; then touch does not constitute touch, and body does not constitute body. One should establish the syllogisms: 'Your body faculty is definitely not the body faculty, because it possesses cognition, like the touch you assert.' 'The touch you assert is definitely not touch, because it possesses cognition, like your body faculty.' Using your single reason, my four syllogisms are established, causing you to be mutually identical and also causing both to perish. The two sentences from 'body and touch' conclude the absence of the two positions. Below refutes separation and contact.