DY – A part of the Kesef Mishna you did not quote:
Ein safek shemi shechanano hashem yisborach sheyisparnes memelachti ASSUR lo litol.
Kesef Mishna
Gam ki nodeh shehalacha kdivrei rabeinu bperush hamishna efsher shehiskimu kein kol chachmei hadoros mishum eis laasos lashem heferu sorasecha.
Kesef Mishna
Please translate the word HEFERU!