"The Messenger of Allah said: 'Whoever introduces a good practice that is followed, he will receive its reward and a reward equivalent to that of those who follow it, without that detracting from their reward in their slightest. And whoever introduces a bad practice that is followed, he will receive its sin and a burden of sin equivalent to that of those who follow it, without that detracting from their burden in the slightest.'"
قَالَ رَسُولُ اللَّهِ ﷺ مَنْ سَنَّ سُنَّةً حَسَنَةً فَعُمِلَ بِهَا كَانَ لَهُ أَجْرُهَا وَمِثْلُ أَجْرِ مَنْ عَمِلَ بِهَا لاَ يَنْقُصُ مِنْ أُجُورِهِمْ شَيْئًا وَمَنْ سَنَّ سُنَّةً سَيِّئَةً فَعُمِلَ بِهَا كَانَ عَلَيْهِ وِزْرُهَا وَوِزْرُ مَنْ عَمِلَ بِهَا مِنْ بَعْدِهِ لاَ يَنْقُصُ مِنْ أَوْزَارِهِمْ شَيْئًا