仁王般若經疏 2.110

2.110

若言無者智不應二，方便智、實智。若言有者聖人智不應一。若論其理不一不二，若定為一，凡夫見俗而應見真。若定有者，智不應。一此正難也。一二之義其事云何，此正結問也。但一二之言既難，所以月光有問，故言一二之其事云何。

"If one says there is not, wisdom should not be twofold" refers to skillful means wisdom and practical wisdom. "If one says there is, the noble one's wisdom should not be single." If one discusses its principle, it is neither one nor two. If it is definitively one, ordinary persons seeing the conventional should also see the ultimate. If it definitively exists, wisdom should not be single. This is precisely the objection. "Regarding the meaning of single and twofold, what is the matter with this?" is precisely the concluding question. Because the statements of single and twofold are difficult, King Moonlight posed the question; hence he says, "Regarding the meaning of single and twofold, what is the matter with this?"