Is it bi'dah or not?
On the authority of A’isha (radiyaAllahu ‘anha) who said that the Messenger of Allah ﷺ said:
“He who innovates something in this matter of ours [i.e. Islam] that is not of it will have it rejected [by Allah]”.
Reported by Bukhari and Muslim
In one narration by Muslim, it reads: “He who does an act which we have not commanded will have it rejected (by Allah)”.
"…The truest of word is the Book of Allah and best of guidance is the guidance of Muhammad. The worst of things are those that are newly invented; every newly-invented thing is an innovation and every innovation is going astray, and every going astray is in the Fire…"
Sunan an-Nasa'i 1578
"…Verily he among you who lives (long) will see great controversy, so you must keep to my sunnah and to the sunnah of the rightly-guided Rashidite Caliphs - cling to them stubbornly. Beware of newly invented matters, for every invented matter is an innovation and every innovation is a going astray and every going astray is in Hell-fire."
Al Nawawi Hadis 28