Mishkat al-Masabih
Mishkat al-Masabih 188
Arabic hadith text
وَعَنْ حَسَّانَ قَالَ: «مَا ابْتَدَعَ قَوْمٌ بِدْعَةً فِي دِينِهِمْ إِلَّا نَزَعَ اللَّهُ مِنْ سُنَّتِهِمْ مِثْلَهَا ثُمَّ لَا يُعِيدُهَا إِلَيْهِمْ إِلَى يَوْمِ الْقِيَامَة.» رَوَاهُ الدَّارمِيّ "
Translation
Ḥassān said: ‘Whenever a people introduce an innovation into their religion, God removes an equivalent part of their Sunnah and does not restore it to them until the Day of Resurrection.’ Al-Dārimī transmitted it.