法華義疏 7.57

7.57

「從佛所聞」下，第二、明所聞之法，即是得解之緣。但得解之緣凡有二種：一、以法為緣；二、以人為緣，即授身子記是也。以法為緣現生歡喜，以人為緣預欣得記故喜也。「發希有心」下，第三、內心歡喜，正是領解也。「即從坐起」下，第四、明外形致敬。「偏袒右肩」者，未起之時正被袈裟，外國依律不著障𦝨及偏袒衣著者得突吉羅罪。今言偏袒者，直是露於右肩，更無內衣也。

From 'having heard from the Buddha' onward is the second part, clarifying the Dharma that was heard, which is the condition for attaining understanding. There are two conditions for attaining understanding: first, taking the Dharma as the condition; second, taking a person as the condition, namely the conferment of prophecy on Śāriputra. Taking the Dharma as the condition generates joy in the present; taking a person as the condition brings joy from anticipating the attainment of prophecy. From 'giving rise to a rare mind' onward is the third, inner joy, which is precisely the assimilation of understanding. From 'immediately arose from their seats' onward is the fourth, clarifying the outward rendering of respect. Regarding 'baring the right shoulder': before rising, they were properly wearing their kāṣāyas; according to the Vinaya in foreign countries, one does not wear an armpit-covering garment or an asymmetrical upper garment, and wearing them incurs a duṣkṛta offense. Here, 'baring the right shoulder' means simply exposing the right shoulder, without any inner garment.