注大乘入楞伽經 3.250

3.250

舉上三無為空，不得對涅槃說生死，亦不得對生死說涅槃。愚夫妄想故說為二，聖人體達故離有無。

Adducing the emptiness of the above three unconditioned things: one cannot speak of saṃsāra in contrast to nirvāṇa, nor can one speak of nirvāṇa in contrast to saṃsāra. Fools falsely discriminate, so they speak of them as two; the noble ones comprehend them thoroughly, so they are free from existence and non-existence.