Exponential rewards for the starters of good
“He who introduced a good practice in Islam then he will be rewarded for it and the reward of those who acted upon it without their rewards being diminished in any way. And he who introduced an evil practice in Islam then he bears its burden and the burden of those who acted upon it without their burdens being diminished in any way.”
«مَن سَنَّ في الإِسْلامِ سُنَّةً حَسَنَةً فَلَهُ أَجْرُهَا وَأَجْرُ من عَمِلَ بِهَا مِنْ بَعْدِهِ مِنْ غَيرِ أَنْ يَنْقُصَ مِنْ أُجُورِهم شَيئًا، ومَن سَنَّ في الإِسْلامِ سُنَّةً سَيِّئَةً فَعَلَيهِ وزْرُهَا، وَوزْرُ مَنْ عَمِلَ بِهَا مِنْ بَعْدِه مِن غَيرِ أَنْ يَنْقُصَ من أَوْزَارِهمْ شَيئًا.»