肇論新疏 2.186

2.186

處有下二句，謂常居有無了無所住，亦不起有無之見。雖不下二句，縱成前後不取不離，真無住之般若也。

The two lines from "dwells in being" onward mean that he constantly resides in being and non-being, completely without anywhere to abide, and also does not give rise to views of being and non-being. The two lines from "though not" onward concede that before and after, neither grasping nor departing, this is truly prajñā of non-abiding.