金剛經纂要刊定記 4.287

4.287

然但下。通妨。先問：且一二二句皆是四言，第三一句獨成六字，文既增減云何成偈？故此釋也。

[On the passage beginning] "However, only...": resolving a difficulty. First, the question: the first and second lines are each four characters, while the third line alone comprises six characters; since the text increases and decreases, how does it form a verse? Hence this explanation.