注大乘入楞伽經 5.70

5.70

言無生者，通說有二：一理無生，圓成實性本不生故；二事無生，緣生之相即無生故。言住如實處成無生相者，謂觀三界唯心所現，離我我所，能證理事俱無生也。

Regarding 'non-arising', generally speaking there are two kinds: first, the non-arising of principle, because the pariniṣpanna-svabhāva originally does not arise; second, the non-arising of phenomena, because the marks of conditioned arising are themselves non-arising. As for 'abiding in the state of reality, they accomplish the mark of non-arising', it means that by observing that the three realms are only manifestations of one's own mind, and departing from the ātman and ātmīya, one can realize that both principle and phenomena are non-arising.