妙法蓮華經玄贊 2.38

2.38

贊曰：此三導明破闇對，寶月能導智明如月可重。　月光破諸癡暗猶如月光。　滿月能為二事。

The commentary: These three form the pair of guiding with radiance and destroying darkness. Ratnacandra can guide with the illumination of wisdom, to be valued like the moon. Candrapraphā destroys all darkness of ignorance, just like moonlight. Pūrṇacandra can perform both tasks.