大乘起信論裂網疏 2.26

2.26

復次，真實空者，從本已來，一切染法不相應故，離一切法差別相故，無有虛妄分別心故。應知真如非有相、非無相，非（亦）有（亦）無相，非非有（非）無相，非一相、非異相，非（亦）一（亦）異相，非非一（非）異相，略說以一切眾生妄分別心所不能觸（證），故立為空。據實道理，妄念非有，空性亦空，以所遮是無，能遮亦無故。

"Furthermore, as for being genuinely empty: because from the beginningless past it does not associate with any defiled dharmas, because it is free from the differentiated marks of all dharmas, and because it has no false and discriminative mind. It should be known that tathatā is neither with marks nor without marks, neither [both] with [and] without marks, nor neither with [nor] without marks; it is neither a single mark nor differentiated marks, neither [both] a single [and] differentiated marks, nor neither a single [nor] differentiated marks. In brief, because it cannot be touched [and realized] by the falsely discriminative minds of all sentient beings, it is established as empty. According to the true principle, deluded thoughts are non-existent, and the nature of emptiness is also empty, because that which is refuted is non-existent, and that which refutes is also non-existent."