金光明經文句記 2.213

2.213

二、「第二」下，報還光。報必冥法，故於句句法報雙陳。此舉所冥智全是法性，寂而常照也。

Second, from "The second..." onward, the reward returns to "light." The reward must obscurely unite with the Dharma; hence, in sentence after sentence, the Dharma and reward are stated in pairs. This indicates that the wisdom that unites is entirely the Dharma-nature, quiescent yet constantly illuminating.