妙法蓮華經玄贊 5.330

5.330

贊曰：下合父志亦二：初合見子得出其心泰然，後合釋成父志。此初也。以教為門而出火宅三界險道，以行為門而入涅槃之果，此中但有出宅教門，不說行門，教亦能入，能入理故，此但說出不說於入，亦可說言得涅槃樂即名為入。

The Commentary says: Below, the synthesis of the father's wish also has two parts: first, synthesising the seeing that the children have escaped and his mind being at ease; second, synthesising and explaining the fulfillment of the father's wish. This is the first. Taking the teaching as a gateway, they exit the perilous path of the burning house and the triple world; taking practice as a gateway, they enter the fruition of nirvāṇa. Here there is only the teaching gateway of leaving the house, without speaking of the practice gateway. The teaching can also enter, because it can enter principle. Here it speaks only of leaving and not of entering; one may also say that attaining the joy of nirvāṇa is precisely called entering.