金光明經文句記 4.29

4.29

初、明用句意。若直說空是中道義能空二邊，其如邪小及以別教皆說雙非空於有無，故迷名者謂與今同，何能超悟邊即中空？又復恐謂若是圓實合談中道，那但名空？空唯離有，豈此中道雙離二邊？為防此計，故作相破相修相，即三雙六句而對辨之。若諸法相名相濫者，無此六句莫辨異同。

First, clarifying the intent of using the propositions. If one directly says that emptiness is the meaning of the Middle Way capable of emptying the two extremes, how about the heterodox, Hinayāna, and Distinct teachings, which all speak of the double negation that empties existence and non-existence? Thus, those deluded by names claim that they are the same as the present [teaching]; how could they transcendently awaken to the extremes themselves being the Middle emptiness? Moreover, it is feared that some might think: 'If it is the Complete and Real, it should speak of the Middle Way; why is it only called emptiness? Emptiness only departs from existence; how could this Middle Way doubly depart from both extremes?' To prevent this misconception, the three pairs of six propositions—mutual refutation, mutual cultivation, and mutual identity—are formulated and analyzed by comparison. If the names of various dharmas' characteristics become conflated, without these six propositions one could not distinguish their differences and identities.