There are many degrees of slander: shallow and profound, slight and heavy. Even among those who embrace the Lotus Sutra, very few uphold it steadfastly both in mind and in deed. Few are the practitioners who are able to uphold this sutra. But those who do will not suffer serious retribution even if they have committed minor offenses against the sutra. Their strong faith expiates their offenses as surely as a flood extinguishes tiny fires.
---> https://www.nichirenlibrary.org/en/wnd-1/Content/74