عَنْ حُذَيْفَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ سَأَلَ رَجُلٌ عَلَى عَهْدِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ فَأَمْسَكَ الْقَوْمُ ثُمَّ إِنَّ رَجُلًا أَعْطَاهُ فَأَعْطَى الْقَوْمُ فَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ مَنْ سَنَّ خَيْرًا فَاسْتُنَّ بِهِ كَانَ لَهُ أَجْرُهُ وَمِنْ أُجُورِ مَنْ تَبِعَهُ غَيْرَ مُنْتَقِصٍ مِنْ أُجُورِهِمْ شَيْئًا وَمَنْ سَنَّ شَرًّا فَاسْتُنَّ بِهِ كَانَ عَلَيْهِ وَزْرُهُ وَمِنْ أَوْزَارِ مَنْ تَبِعَهُ غَيْرَ مُنْتَقِصٍ مِنْ أَوْزَارِهِمْ شَيْئًا
It is narrated from Sayyiduna Hudhayfah (may Allah be pleased with him), he says: A man asked during the time of Prophethood, but the people did not give him anything. Then another man gave him something, and seeing this, other people also gave him something. Observing this situation, the Noble Prophet (peace and blessings be upon him) said: Whoever initiates a good practice and then it is adopted, he will receive its reward as well as the reward of those who follow it, while nothing will be diminished from their own rewards. And whoever establishes a bad practice and then it is adopted, he will bear its sin as well as the sins of those who follow it, while nothing will be diminished from their sins.