十不二門指要鈔 2.37

2.37

Third, from "Simply because..." downward, explaining that when phenomena reach their culmination, the principle perishes. As for 'the principle becomes manifest' and so forth: in contrast to concealment it is called cause, and matching manifestation it is called effect; once manifestation has no opposite, how could the name of effect remain? The effect can correspond to the real, yet its name does not even remain. Since the cause pertains to the expedient, both should properly be discarded. Furthermore, based on cause and effect, phenomena are established and the principle harmonizes them; once what is matched is obliterated, that which harmonizes naturally perishes.