仁王護國般若波羅蜜多經疏 2.213

2.213

解曰：然三脫門，義如前解。若三三昧，通漏無漏；言解脫門，即無漏故。又准下文，前之三段於上三地隨次偏增，復三脫門通諸地故。從此第二結行根本。

Commentary: Now, the meaning of the three gates of liberation is as explained before. If one speaks of the three samādhis, they pertain to both the contaminated and the uncontaminated; but when spoken of as 'gates of liberation', they are exclusively uncontaminated. Furthermore, based on the text below, the preceding three sections are successively emphasized on the upper three bhūmis, whereas the three gates of liberation pervade all bhūmis. Hereafter, the second [part] concludes the root of practices.