Biddat is something that is not practiced by Prophet or sahaba even though they had means and reasons for that.
where does this come from ? if we must follow someone, for doing something or not doing something then it shld be Prophet s.a.w only. however thats not the case.... having more than 4 wives at same time isnt allowed even though Prophet s.a.w did it. Y not coz Same Prophet s.a.w and Quran has Forbidden it.
Lookin at that Biddat is Only what ever Quran and Prophet s.a.w has Forbidden.