Sunan Ibn Majah 14
سنن ابن ماجه#14SahihAishah narrated that:The Messenger of Allah (ﷺ) said: "Whoever innovates something in this matter of ours (i.e. Islam) that is not part of it, will have it rejected
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih - Bukhari And Muslim