Although the believers of the Fujufuse School depended on other sects or schools for terauke, many of them were actually 'naishin' (内信), those who believed in the Fujufuse School at heart, and some ardent believers were ashamed of depending on other sects or schools for terauke and became 'donors (法立, horyu)' for the Fujufuse School by seceding from the school.
不受不施派の信者は、他宗他派に寺請をしてもらうが内心では不受不施派を信仰する「内信」となる者が多く、一部の強信者は他宗他派への寺請を潔しとせず無籍になって不受不施派の「施主（法立）」となった。