金剛經纂要刊定記 4.263

4.263

答：「論云：『法雖不可取不可說，而不空故。』意云：恐有人聞是法不可取說，便欲一向毀廢言教故。此校量顯勝，令其演說受持。故大雲於此開立第五不空福德疑。以論文不言斷疑，故此不立也。」

Answer: "The Treatise says: 'Although the dharma cannot be grasped and cannot be spoken, it is not empty.' The intent is: fearing that someone hearing that this dharma cannot be grasped or spoken might completely abandon and discard the teachings of the word, this comparison and appraisal displays [its] excellence to cause them to expound and uphold it. Therefore Dayun established here a fifth doubt concerning the non-empty merit. Because the text of the Treatise does not speak of severing doubts, it is not established here."