金剛般若疏 1.15

1.15

第五、釋經。經有三種，或文為經、或理為經、或文理合為經。地論師云：三十心前人文為經；三十心，文理合為經；初地已去，用理為經。今明文理因緣，故為經，因文悟道故。以能表之，文為經也。

Fifth, explaining sūtra. There are three kinds of sūtras: either the text is the sūtra, or the principle is the sūtra, or the text and principle combined are the sūtra. Masters of the Daśabhūmika School state: for people prior to the thirty minds, the text is the sūtra; for the thirty minds, text and principle combined are the sūtra; from the first bhūmi onward, they use the principle as the sūtra. Now I explain that through the condition of text and principle, it is a sūtra, because one awakens to the Way through the text. Because it can express it, the text is the sūtra.