金剛經纂要刊定記 5.97

5.97

捨身等者。意恐人聞寶施不及受持，便謂以是身外之財所以劣於經福，若將身命布施必勝受持。為破其見，故有此文。沙數猶劣，況一身耶？

"Renouncing the body..." means: it was feared that upon hearing that the gift of treasures does not equal upholding [the sūtra], people would say that because treasures are wealth external to the body, they are inferior to the merit of the sūtra, but if one gives one's body and life, it must surely surpass upholding [the sūtra]. To shatter this view, there is this passage. If [renouncing bodies equal to] sands [of the Ganges] is still inferior, how much more so a single body?