維摩經略疏垂裕記 4.135

4.135

二、「若毘」下，示兩門異說，二：初、通示兩門。「成論」下，以無常是有法故，是以空方見道。

Second, under "If according to the Vibhāṣā...", he shows the differing accounts of the two gates, in two parts: first, generally showing the two gates. Under "The Tattvasiddhi...", because impermanence is an existent phenomenon, one sees the path only by means of emptiness.