金剛般若經依天親菩薩論贊略釋秦本義記卷上 1.75

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經。何以故　第二徵也。怪其福勝所以返徵。是故論云云何此二能大得菩提耶。

[Sūtra:] "Why is this?" The second is the inquiry. Marveling at its superior merit, an inquiry is made in reverse. Therefore the treatise says: "How can these two greatly attain bodhi?"