Fuju-fuse-gi is a concept of the Nichiren sect of Buddhism; "fuju" means refusing offerings from those who don't believe in the Hokekyo (Lotus Sutra) and "fuse" means giving no offerings to priests who propagates beliefs other than Hokekyo.
不受不施義（ふじゅふせぎ）とは、日蓮宗における思想の1つでの不受とは法華経の信者以外からは施しを受けず、不施とは法華経以外の教えを広める僧侶には施しをしないということ。