Whoever innovates in this affair of ours
مَنْ أَحْدَثَ فِي أَمْرِنَا هَذَا مَا لَيْسَ مِنْهُ فَهُوَ رَدٌّ
Man ahdatha fi amrina hadha ma laysa minhu fa-huwa radd.
"Whoever introduces into this affair of ours something that is not from it, it is rejected."
Narrated by 'A'ishah. Sahih al-Bukhari 2697, Sahih Muslim 1718 · Nawawi's Forty · #5
A short reflection
Keep the deen the way the Prophet ﷺ left it. New acts of worship are not additions — they're substitutions.