金剛般若經依天親菩薩論贊略釋秦本義記卷上 1.114

1.114

[Sūtra:] "The Buddha told Subhūti: 'If a good man or good woman, from within this sūtra, were to receive and uphold even as little as a four-line gāthā, etc., and explain it to others, this merit would surpass the previous merit.'"
This is the second [part], demonstrating the superiority. Here, although the giving is great, its merit is inferior, because contaminated causes run contrary to nirvāṇa. Although upholding the sūtra is minimal, its merit is superior, because uncontaminated causes shatter saṃsāra.