No! Rather, the stain has covered their hearts of that which they were earning.  

كَلَّا ۖ بَلْ ۜ رَانَ عَلَىٰ قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ  

the Messenger of Allah said: “Verily, when the slave (of Allah) commits a sin, a black spot appears on his heart. When he refrains from it, seeks forgiveness and repents, his heart is polished clean. But if he returns, it increases until it covers his entire heart. And that is the ‘Ran’ which Allah mentioned: ‘Nay, but on their hearts is the Ran which they used to earn.’”  

عَنْ رَسُولِ اللَّهِ ﷺ قَالَ إِنَّ الْعَبْدَ إِذَا أَخْطَأَ خَطِيئَةً نُكِتَتْ فِي قَلْبِهِ نُكْتَةٌ سَوْدَاءُ فَإِذَا هُوَ نَزَعَ وَاسْتَغْفَرَ وَتَابَ سُقِلَ قَلْبُهُ وَإِنْ عَادَ زِيدَ فِيهَا حَتَّى تَعْلُوَ قَلْبَهُ وَهُوَ الرَّانُ الَّذِي ذَكَرَ اللَّهُ {كلاَّ بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ} [المطففين 14]  

“When the believer commits sin, a black spot appears on his heart. If he repents and gives up that sin and seeks forgiveness, his heart will be polished. But if (the sin) increases, (the black spot) increases. That is the Ran that Allah mentions in His Book: “Nay! But on their hearts is the Ran (covering of sins and evil deeds) which they used to earn.” [83:14]  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِنَّ الْمُؤْمِنَ إِذَا أَذْنَبَ كَانَتْ نُكْتَةٌ سَوْدَاءُ فِي قَلْبِهِ فَإِنْ تَابَ وَنَزَعَ وَاسْتَغْفَرَ صُقِلَ قَلْبُهُ فَإِنْ زَادَ زَادَتْ فَذَلِكَ الرَّانُ الَّذِي ذَكَرَهُ اللَّهُ فِي كِتَابِهِ {كَلاَّ بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ} [المطففين 14]  

Malik related to me that he heard that Abdullah ibn Masud used to say, "The slave continues to lie and a black spot grows in his heart until all his heart becomes black. Then he is written, in Allah's sight, among the liars."  

أَنَّ عَبْدَ اللَّهِ بْنَ مَسْعُودٍ كَانَ يَقُولُ لاَ يَزَالُ الْعَبْدُ يَكْذِبُ وَتُنْكَتُ فِي قَلْبِهِ نُكْتَةٌ سَوْدَاءُ حَتَّى يَسْوَدَّ قَلْبُهُ كُلُّهُ فَيُكْتَبَ عِنْدَ اللَّهِ مِنَ الْكَاذِبِينَ  

“When the believer commits sin, a black spot appears on his heart. If he repents and gives up that sin and seeks forgiveness, his heart will be polished. But if (the sin) increases, (the black spot) increases. That is the Ran that Allah mentions in His Book: “Nay! But on their hearts is the Ran (covering of sins and evil deeds) which they used to earn.” [83:14] (Using translation from Ibn Mājah 4244)   

قَالَ رَسُولُ اللهِ ﷺ إِنَّ الْمُؤْمِنَ إِذَا أَذْنَبَ كَانَتْ نُكْتَةٌ سَوْدَاءُ فِي قَلْبِهِ فَإِنْ تَابَ وَنَزَعَ وَاسْتَغْفَرَ صُقِلَ قَلْبُهُ وَإِنْ زَادَ زَادَتْ حَتَّى يَعْلُوَ قَلْبَهُ ذَاكَ الرَّانُ الَّذِي ذَكَرَ اللهُ ﷻ فِي الْقُرْآنِ {كَلَّا بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ} [المطففين 14]  

“When the believer commits sin, a black spot appears on his heart. If he repents and gives up that sin and seeks forgiveness, his heart will be polished. But if (the sin) increases, (the black spot) increases. That is the Ran that Allah mentions in His Book: “Nay! But on their hearts is the Ran (covering of sins and evil deeds) which they used to earn.” [83:14] (Using translation from Ibn Mājah 4244)   

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِنَّ الْمُؤْمِنَ إِذَا أَذْنَبَ ذَنْبًا كَانَتْ نُكْتَةً سَوْدَاءَ فِي قَلْبِهِ فَإِنْ تَابَ وَنَزَعَ وَاسْتَغْفَرَ سُقِلَ مِنْهَا قَلْبُهُ وَإِنْ زَادَ زَادَتْ حَتَّى يَعْلَقَ بِهَا قَلْبُهُ فَذَلِكَ الرَّانُ الَّذِي ذَكَرَ اللَّهُ فِي كِتَابِهِ {كَلَّا بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ} [المطففين 14]  

the Messenger of Allah said: “Verily, when the slave (of Allah) commits a sin, a black spot appears on his heart. When he refrains from it, seeks forgiveness and repents, his heart is polished clean. But if he returns, it increases until it covers his entire heart. And that is the ‘Ran’ which Allah mentioned: ‘Nay, but on their hearts is the Ran which they used to earn.’” (Using translation from Tirmidhī 3334)   

عَنْ رَسُولِ اللَّهِ ﷺ أَنَّهُ قَالَ «إِنَّ الْعَبْدَ إِذَا أَخْطَأَ خَطِيئَةً نُكِتَ فِي قَلْبِهِ نُكْتَةٌ فَإِنْ هُوَ نَزَعَ وَاسْتَغْفَرَ وَتَابَ صُقِلَتْ فَإِنْ عَادَ زِيدَ فِيهَا فَإِنْ عَادَ زِيدَ فِيهَا حَتَّى تَعْلُوَ فِيهِ فَهُوَ الرَّانُ الَّذِي ذَكَرَ اللَّهُ {كَلَّا بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ}»  

the Messenger of Allah said: “Verily, when the slave (of Allah) commits a sin, a black spot appears on his heart. When he refrains from it, seeks forgiveness and repents, his heart is polished clean. But if he returns, it increases until it covers his entire heart. And that is the ‘Ran’ which Allah mentioned: ‘Nay, but on their hearts is the Ran which they used to earn.’” (Using translation from Tirmidhī 3334)   

عَنْ رَسُولِ اللَّهِ ﷺ قَالَ «إِنَّ الْعَبْدَ إِذَا أَخْطَأَ خَطِيئَةً نُكِتَ فِي قَلْبِهِ نُكْتَةٌ فَإِنْ هُوَ نَزَعَ وَاسْتَغْفَرَ وَتَابَ صُقِلَتْ فَإِنْ عَادَ زِيدَ فِيهَا وَإِنْ عَادَ زِيدَ فِيهَا حَتَّى تَعْلُوَ فِيهِ فَهُوَ الرَّانُ الَّذِي ذَكَرَ اللَّهُ جَلَّ وَعَلَا {كَلَّا بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ} »  

the Messenger of Allah said: “Verily, when the slave (of Allah) commits a sin, a black spot appears on his heart. When he refrains from it, seeks forgiveness and repents, his heart is polished clean. But if he returns, it increases until it covers his entire heart. And that is the ‘Ran’ which Allah mentioned: ‘Nay, but on their hearts is the Ran which they used to earn.’” (Using translation from Tirmidhī 3334)   

عَنْ رَسُولِ اللهِ ﷺ قَالَ إِنَّ الْعَبْدَ إِذَا أَخْطَأَ خَطِيئَةً نُكِتَتْ فِي قَلْبِهِ نُكْتَةٌ فَإِنْ هُوَ نَزَعَ وَاسْتَغْفَرَ وَتَابَ صَقَلَتْ قَلْبَهُ وَإِنْ عَادَ زِيدَ فِيهَا حَتَّى تَعْلُوَ قَلْبَهُ فَهُوَ الرَّانُ الَّذِي ذَكَرَ اللهُ {كَلَّا بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ} [المطففين 14]  

the Messenger of Allah said: “Verily, when the slave (of Allah) commits a sin, a black spot appears on his heart. When he refrains from it, seeks forgiveness and repents, his heart is polished clean. But if he returns, it increases until it covers his entire heart. And that is the ‘Ran’ which Allah mentioned: ‘Nay, but on their hearts is the Ran which they used to earn.’” (Using translation from Tirmidhī 3334)   

عَنْ رَسُولِ اللهِ ﷺ قَالَ إنَّ الْعَبْدَ إِذَا أَخْطَأَ خَطِيئَةً نُكِتَ فِي قَلْبِهِ نُكْتَةٌ فَإِنْ هُوَ نَزَعَ وَاسْتَغْفَرَ وَتَابَ صُقِلَتْ وَإِنْ عَادَ زِيدَ فِيهَا حَتَّى تُغْلِقَ قَلْبَهُ فَهُوَ الرَّانُ الَّذِي ذَكَرَ اللهُ {كَلَّا بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ} [المطففين 14]  

[Machine] The Messenger of Allah ﷺ said, "Indeed, when a believer commits a sin, there is a black spot in his heart. If he repents, removes it, and seeks forgiveness, his heart is polished. But if he returns to sin, it increases until his heart is sealed with it. This is what Allah mentioned in His book, 'No! Rather, the stain has covered their hearts of that which they were earning' [Al-Mutaffifin 14]." The scholar mentioned that these narrations, along with those similar to them, serve as a warning and a reminder for those who persist in committing sins without seeking forgiveness and neglecting to repent from them.  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ إِنَّ الْمُؤْمِنَ إِذَا أَذْنَبَ ذَنْبًا كَانَتْ نُكْتَةٌ سَوْدَاءُ فِي قَلْبِهِ فَإِنْ تَابَ وَنَزَعَ وَاسْتَغْفَرَ صُقِلَ مِنْهَا قَلْبُهُ فَإِنْ عَادَ رَانَتْ حَتَّى يُغْلَقَ بِهَا قَلْبُهُ فَذَاكَ الَّذِي ذَكَرَ اللهُ ﷻ فِي كِتَابِهِ {كَلَّا بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ} [المطففين 14] قَالَ الشَّيْخُ وَيُشْبِهُ أَنْ تَكُونَ هَذِهِ الْأَخْبَارُ وَمَا جَانَسَهَا فِي التَّغْلِيظِ وَالتَّشْدِيدِ فِيمَنْ أَصَرَّ عَلَى الذُّنُوبِ غَيْرَ مُسْتَغْفِرٍ مِنْهَا وَلَا مُحَدِّثٍ نَفْسَهُ بِتَرْكِهَا  

the Messenger of Allah said: “Verily, when the slave (of Allah) commits a sin, a black spot appears on his heart. When he refrains from it, seeks forgiveness and repents, his heart is polished clean. But if he returns, it increases until it covers his entire heart. And that is the ‘Ran’ which Allah mentioned: ‘Nay, but on their hearts is the Ran which they used to earn.’” (Using translation from Tirmidhī 3334)   

"إِنَّ الْعَبْدَ إِذَا أَخْطَأَ خَطِيئةً نُكتَتْ في قَلبِه نُكْتَةٌ سَوْداءُ، فَإِنْ هُوَ نَزَعَ، واسْتَغْفَرَ، وَتَابَ صَقُلَ قَلبُه، وإنْ عَادَ زِيدَ فِيها حتَّى تَعْلُوَ عَلى قَلْبِه، وَهو الرَّانُ الَّذِي ذَكَرَ اللهُ: {كَلَّا بَلْ رَانَ عَلَى قُلُوبِهِمْ مَا كَانُوا يَكْسِبُونَ} ".  

"إذا أذنب العبدُ نُكِت في قلبه نُكتةٌ سوداءُ، فإن تاب صُقِل منها، فإن عاد زادت حتى تعظمَ في قلبِه".