法華文句記 8.79

8.79

合釋中言「三門」者，初二屬事，後一屬理，事理並是所迷之境。初「約苦果」者，故用慈悲門，苦須拔故。次「約結業」者，故用忍門，依理離故。三「約諦境」，故用空門，善住空故。第三單「約理」者，理即諦理，故約三諦，即向第三具三諦故。言「云云」者，應以多種三法對釋此三，令成圓融通暢自在，乃識此文攝教遍相，故下總約教云「凡多種釋品者皆約圓教」。

In the combined explanation, the phrase 'three gates' means that the first two pertain to phenomena and the latter one pertains to principle; phenomena and principle are both objects of delusion. First, 'in terms of the suffering fruit': therefore the gate of compassion is used, because suffering must be eradicated. Next, 'in terms of fetters and karma': therefore the gate of patience is used, because it is departed from based on principle. Third, 'in terms of the realm of truth': therefore the gate of emptiness is used, because one dwells well in emptiness. The third, purely 'in terms of principle': principle is indeed the principle of truth, hence it is in terms of the three truths, which is precisely being endowed with the three truths as in the third above. The phrase 'et cetera' means that one should use many kinds of three dharmas to explain these three in correspondence, making them perfectly fused, unimpeded, and sovereign, so that one recognizes the comprehensive aspect of the teachings subsumed in this text. Therefore, below, generally in terms of the teachings, it says: 'Whenever there are many kinds of explanations of the chapter, all are in terms of the perfect teaching.'