注大乘入楞伽經 6.87

6.87

明世尊何故偏於世諦離有無處言起分別，第一義諦離有無處不言起分別耶？故知世尊所說乖理，既同離有無，何故一處言起一不起也。

This clarifies: why does the World-Honoured One exclusively speak of discrimination arising in conventional truth which is free from existence and non-existence, yet does not speak of discrimination arising in ultimate truth which is free from existence and non-existence? Hence one knows that what the World-Honoured One has taught conflicts with reason; since both are equally free from existence and non-existence, why is it said to arise in one place and not in the other?