He who introduced some good practice in Islam which was followed after him (by people) he would be assured of reward like one who followed it, without their rewards being diminished in any respect. And he who introduced some evil practice in Islam which had been followed subsequently (by others), he would be required to bear the burden like that of one who followed this (evil practice) without their's being diminished in any respect.  

جَاءَ نَاسٌ مِنَ الأَعْرَابِ إِلَى رَسُولِ اللَّهِ ﷺ عَلَيْهِمُ الصُّوفُ فَرَأَى سُوءَ حَالِهِمْ قَدْ أَصَابَتْهُمْ حَاجَةٌ فَحَثَّ النَّاسَ عَلَى الصَّدَقَةِ فَأَبْطَئُوا عَنْهُ حَتَّى رُئِيَ ذَلِكَ فِي وَجْهِهِ قَالَ ثُمَّ إِنَّ رَجُلاً مِنَ الأَنْصَارِ جَاءَ بِصُرَّةٍ مِنْ وَرِقٍ ثُمَّ جَاءَ آخَرُ ثُمَّ تَتَابَعُوا حَتَّى عُرِفَ السُّرُورُ فِي وَجْهِهِ فَقَالَ رَسُولُ اللَّهِ ﷺ مَنْ سَنَّ فِي الإِسْلاَمِ سُنَّةً حَسَنَةً فَعُمِلَ بِهَا بَعْدَهُ كُتِبَ لَهُ مِثْلُ أَجْرِ مَنْ عَمِلَ بِهَا وَلاَ يَنْقُصُ مِنْ أُجُورِهِمْ شَىْءٌ وَمَنْ سَنَّ فِي الإِسْلاَمِ سُنَّةً سَيِّئَةً فَعُمِلَ بِهَا بَعْدَهُ كُتِبَ عَلَيْهِ مِثْلُ وِزْرِ مَنْ عَمِلَ بِهَا وَلاَ يَنْقُصُ مِنْ أَوْزَارِهِمْ شَىْءٌ  

"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  

"The Messenger of Allah said: 'Whoever introduces a good practice that is followed after him, will have a reward for that and the equivalent of their reward, without that detracting from their reward in the slightest. Whoever introduces an evil practice that is followed after him, will bear the burden of sin for that and the equivalent of their burden of sin, without that detracting from their burden in the slightest.'"  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ سَنَّ سُنَّةً حَسَنَةً فَعُمِلَ بِهَا بَعْدَهُ كَانَ لَهُ أَجْرُهَا وَمِثْلُ أُجُورِهِمْ مِنْ غَيْرِ أَنْ يَنْقُصَ مِنْ أُجُورِهِمْ شَيْئًا وَمَنْ سَنَّ سُنَّةً سَيِّئَةً فَعُمِلَ بِهَا بَعْدَهُ كَانَ عَلَيْهِ وِزْرُهُ وَمِثْلُ أَوْزَارِهِمْ مِنْ غَيْرِ أَنْ يَنْقُصَ مِنْ أَوْزَارِهِمْ شَيْئًا  

"My father told me narrating from my grandfather, that the Messenger of Allah said: 'Whoever revives a Sunnah of mine, which people then act upon, will have a reward equivalent to that of those who act upon it, without that detracting from their reward in the slightest. And whoever introduces an innovation (Bid'ah) that is acted upon, will have a burden of sins equivalent to that of those who act upon it, withot that detracting from the burden of those who act upon it in the slightest.'"  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَنْ أَحْيَا سُنَّةً مِنْ سُنَّتِي فَعَمِلَ بِهَا النَّاسُ كَانَ لَهُ مِثْلُ أَجْرِ مَنْ عَمِلَ بِهَا لاَ يَنْقُصُ مِنْ أُجُورِهِمْ شَيْئًا وَمَنِ ابْتَدَعَ بِدْعَةً فَعُمِلَ بِهَا كَانَ عَلَيْهِ أَوْزَارُ مَنْ عَمِلَ بِهَا لاَ يَنْقُصُ مِنْ أَوْزَارِ مَنْ عَمِلَ بِهَا شَيْئًا  

[Machine] The Prophet ﷺ said, "Whoever establishes a good tradition in Islam will receive its reward and the reward of those who follow it, without decreasing anything from their rewards. And whoever establishes a bad tradition in Islam will bear its sin and the sin of those who follow it, without decreasing anything from their sins."  

عَنِ النَّبِيِّ ﷺ قَالَ مَنْ سَنَّ فِي الْإِسْلَامِ سُنَّةً حَسَنَةً كَانَ لَهُ أَجْرُهَا وَأَجْرُ مَنْ عَمِلَ بِهَا مِنْ بَعْدِهِ مِنْ غَيْرِ أَنْيُنْتَقَصَ مِنْ أُجُورِهِمْ شَيْءٌ وَمَنْ سَنَّ فِي الْإِسْلَامِ سُنَّةً سَيِّئَةً كَانَ عَلَيْهِ وِزْرُهَا وَوِزْرُ مَنْ عَمِلَ بِهَا مِنْ بَعْدِهِ مِنْ غَيْرِ أَنْ يُنْتَقَصَ مِنْ أَوْزَارِهِمْ شَيْءٌ  

"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.'" (Using translation from Ibn Mājah 203)   

قَالَ رَسُولُ اللهِ ﷺ لَا يَسُنُّ عَبْدٌ سُنَّةً صَالِحَةً يَعْمَلُ بِهَا مَنْ بَعْدَهُ إِلَّا كَانَ لَهُ مِثْلُ أَجْرِ مَنْ عَمِلَ بِهَا لَا يُنْقَصُ مِنْ أُجُورِهِمْ شَيْءٌ وَلَا يَسُنُّ عَبْدٌ سُنَّةَ سُوءٍ يَعْمَلُ بِهَامَنْ بَعْدَهُ إِلَّا كَانَ عَلَيْهِ وِزْرُهَا وَوِزْرُ مَنْ عَمِلَ بِهَا لَا يُنْقَصُ مِنْ أَوْزَارِهِمْ شَيْءٌ  

"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.'" (Using translation from Ibn Mājah 203)   

قَالَ رَسُولُ اللَّهِ ﷺ «مَنْ سَنَّ سُنَّةً حَسَنَةً عُمِلَ بِهَا بَعْدَهُ كَانَ لَهُ مِثْلُ أَجْرِ مَنْ عَمِلَ بِهَا مِنْ غَيْرِ أَنْ يُنْقَصَ مِنْ أَجْرِهِ شَيْءٌ وَمَنْ سَنَّ سُنَّةً سَيِّئَةً كَانَ عَلَيْهِ مِثْلُ وِزْرِ مَنْ يعَمِلَ بِهَا مِنْ غَيْرِ أَنْ يُنْقَصَ مِنْ أَوْزَارِهِم شَيْءٌ»  

[Machine] A man asked the Messenger of Allah ﷺ to encourage people to give charity until it could be seen in his face. Then a man from the Ansar came with a gift and presented it to the Prophet ﷺ. The joy could be seen in the face of the Messenger of Allah ﷺ. He said, "Whoever establishes a good practice in Islam and someone practices it after him, both receive a reward for it and the reward of everyone who acts upon it does not diminish in any way. And whoever establishes a bad practice in Islam and someone practices it after him, carries the burden of both and the burden of everyone who acts upon it does not diminish in any way."  

سَأَلَ رَجُلٌ رَسُولَ اللهِ ﷺ فَحَثَّ النَّاسَ عَلَى الصَّدَقَةِ حَتَّى رُؤِيَ ذَلِكَ فِي وَجْهِ رَسُولِ اللهِ ﷺ فَجَاءَ رَجُلٌ مِنَ الْأَنْصَارِ بِذَهَبَةٍ فَنَبَذَهَا إِلَى النَّبِيِّ ﷺ فَرُؤِيَ السُّرُورُ فِي وَجْهِ رَسُولِ اللهِ ﷺ فَقَالَ «مَنْ سَنَّ سُنَّةً حَسَنَةً فِي الْإِسْلَامِ فَعُمِلَ بِهَا مِنْ بَعْدِهِ كَانَ لَهُ أَجْرُهَا وَمَثَلُ أَجْرِ مَنْ عَمِلَ بِهَا لَا يَنْقُصُ مِنْ أُجُورِهِمْ شَيْءٌ وَمَنْ سَنَّ سُنَّةً سَيِّئَةً فِي الْإِسْلَامِ فَعُمِلَ بِهَا بَعْدَهُ كَانَ عَلَيْهِ وِزْرُهَا وَمَثَلُ وِزْرِ مَنْ عَمِلَ بِهَا لَا يَنْقُصُ مِنْ أَوْزَارِهِمْ شَيْءٌ»  

[Machine] The Messenger of Allah, may peace and blessings be upon him, said, "Whoever establishes a good practice in Islam will receive the same reward as those who act upon it, without their rewards being diminished in any way. And whoever establishes an evil practice in Islam will bear the same burden as those who act upon it, without their burdens being lessened in any way."  

قَالَ رَسُولُ اللهِ ﷺ «مَنْ سَنَّ فِي الْإِسْلَامِ سُنَّةً حَسَنَةً فَلَهُ مِثْلُ أَجْرِ مَنْ عَمِلَ بِهَا فِي أَنْ لَا يَنْقُصَ مِنْ أُجُورِهِمْ شَيْءٌ وَمَنْ سَنَّ فِي الْإِسْلَامِ سُنَّةً سَيِّئَةً فَعَلَيْهِ مِثْلُ وِزْرِ مَنْ عَمِلَ بِهَا فِي أَنَّهُ لَا يَنْقُصُ مِنْ أَوْزَارِهِمْ شَيْءٌ»  

[Machine] The Messenger of Allah ﷺ said: "It is not recommended for a servant to perform a righteous deed after it is completed except that he will have a reward similar to that of the one who performs it, while their reward will not be decreased in any way. And a servant should not acquire an evil habit after it is done except that he will be burdened with a similar sin to that of the one who carries it out, without their own burdens being lessened."  

قَالَ رَسُولُ اللهِ ﷺ «لَا يَسُنُّ الْعَبْدُ سُنَّةً صَالِحَةً يُعْمَلُ بِهَا بَعْدَهُ إِلَّا كَانَ لَهُ مِثْلُ أَجْرِ مَنْ يَعْمَلُ بِهَا لَا يَنْقُصُ مِنْ أُجُورِهِمْ شَيْءٌ وَلَا يَسْتَنُّ عَبْدٌ سُنَّةً سَيِّئَةً يُعْمَلُ بِهَا بَعْدَهُ إِلَّا كَانَ عَلَيْهِ مِثْلُ وِزْرِ مَنْ يَعْمَلُ بِهَا لَا يَنْقُصُ مِنْ أَوْزَارِهِمْ شَيْءٌ»  

[Machine] The Messenger of Allah ﷺ said, "A servant does not perform a righteous deed that he continues to do after his death, except that he will have the same reward as the one who performs it, without any decrease in their rewards. And a servant does not perform an evil deed that he continues to do after his death, except that he will bear the same burden as the one who performs it, without any decrease in their burdens."  

قَالَ رَسُولُ اللهِ ﷺ «لَا يَسُنُّ الْعَبْدُ سُنَّةً صَالِحَةً يُعْمَلُ بِهَا بَعْدَهُ إِلَّا كَانَ لَهُ مِثْلُ أَجْرِ مَنْ يَعْمَلُ بِهَا لَا يَنْقُصُ مِنْ أُجُورِهِمْ شَيْءٌ وَلَا يَسْتَنُّ عَبْدٌ سُنَّةً سَيِّئَةً يُعْمَلُ بِهَا بَعْدَهُ إِلَّا كَانَ عَلَيْهِ مِثْلُ وِزْرِ مَنْ يَعْمَلُ بِهَا لَا يَنْقُصُ مِنْ أَوْزَارِهِمْ شَيْءٌ»  

[Machine] The Messenger of Allah, ﷺ , said, "Whoever establishes a good Sunnah (practice) in Islam, and it is acted upon after him, he will be rewarded and those who act upon it after him will not have their reward reduced in any way. And whoever establishes a bad Sunnah (practice) in Islam, and it is acted upon after him, he will bear the burden of sin for it and those who act upon it after him will not have their burden reduced in any way."  

قَالَ رَسُولُ اللهِ ﷺ «مَا مِنْ أَحَدٍ يَسُنُّ سُنَّةً حَسَنَةً فِي الْإِسْلَامِ فَيُعْمَلُ بِهَا مِنْ بَعْدِهِ إِلَّا كَانَ لَهُ مِثْلُ أَجْرِ مَنْ عَمِلَ بِهَا مِنْ بَعْدِهِ مِنْ غَيْرِ أَنْ يَنْقُصَ مِنْ أُجُورِهِمْ شَيْءٌ وَمَنْ سَنَّ سُنَّةً سَيِّئَةً فِي الْإِسْلَامِ فَيُعْمَلُ بِهَا مِنْ بَعْدِهِ إِلَّا كَانَ عَلَيْهِ مِثْلُ أَوْزَارِ الَّذِينَ يَعْمَلُونَ بِهَا مِنْ بَعْدِهِ مِنْ غَيْرِ أَنْ يَنْقُصَ مِنْ أَوْزَارِهِمْ شَيْءٌ»  

“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.»  

"مَنْ سَنَّ سُنَّةً حَسَنَةً عُمِلَ بها بَعْدَهُ كَانَ لَه أَجْرُهُ وَمِثْلُ أُجُورِهم مِنْ غَيرِ أَن يَنْتَقِصَ مِنْ أُجُورِهِمْ شَيئًا، وَمَنْ سَنَ سُنَّةً سيِّئَةً فَعُمِلَ بِهَا بَعْدَهُ كَانَ عَلَيهِ وزْرُهَا وَمِثَلُ أَوْزَارِهمْ مِنْ غَيرِ أَنْ يَنْتَقِصَ مِنْ أَوْزَارِهِمْ شَيئًا".  

"مَنْ أَحْيَا سُنَّةً مِنْ سُنَّتِى فَعَمِل بِهَا النَّاسُ، فإن لَهُ أَجْرُ مِثْل مَنْ عَمِلَ بِهَا لَا يَنْقُصُ مِنْ أُجُورِهِمْ شَيئًا، وَمَنْ ابْتَدعً بِدْعَةً فَعَمِلَ بِهَا كَانَ عَلَيهِ أَوْزَارُ مَنْ عَمِلَ بِهَا، لَا يَنْقُصُ مِنْ أَوْزَارِهِمْ شَيئًا".