首楞嚴義疏注經 2.544

2.544

「若見暗時不與暗合，與明合者應非見明，既不見明，云何明合，了明非暗？」

"If when seeing darkness it does not join with darkness, then one that joins with light ought not to see light. Since it would not see light, how could it join with light and clearly know light and not darkness?"