金剛經纂要刊定記 7.3

7.3

不斷等者。意云：生死本空猶如影像，影像不有復何斷焉？今言不斷者，非謂固留，但了性不有、了相不無，隨順俗諦故云不斷。此即通達之義。

"Not severing..." and so forth means: saṃsāra is originally empty like a reflection; if a reflection does not exist, what is there to sever? Saying "not severing" now does not mean stubbornly retaining it; it simply means understanding that its nature is non-existent while its marks are not non-existent, and conforming to conventional truth; hence it is called "not severing". This is the meaning of thorough penetration.