I heard the Messenger of Allah ﷺ say: There were two men among Banu Isra'il, who were striving for the same goal. One of them would commit sin and the other would strive to do his best in the world. The man who exerted himself in worship continued to see the other in sin. He would say: Refrain from it. One day he found him in sin and said to him: Refrain from it. He said: Leave me alone with my Lord. Have you been sent as a watchman over me? He said: I swear by Allah, Allah will not forgive you, nor will he admit you to Paradise. Then their souls were taken back (by Allah), and they met together with the Lord of the worlds. He (Allah) said to this man who had striven hard in worship; Had you knowledge about Me or had you power over that which I had in My hand? He said to the man who sinned: Go and enter Paradise by My mercy. He said about the other: Take him to Hell. AbuHurayrah said: By Him in Whose hand my soul is, he spoke a word by which this world and the next world of his were destroyed.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ كَانَ رَجُلاَنِ فِي بَنِي إِسْرَائِيلَ مُتَآخِيَيْنِ فَكَانَ أَحَدُهُمَا يُذْنِبُ وَالآخَرُ مُجْتَهِدٌ فِي الْعِبَادَةِ فَكَانَ لاَ يَزَالُ الْمُجْتَهِدُ يَرَى الآخَرَ عَلَى الذَّنْبِ فَيَقُولُ أَقْصِرْ فَوَجَدَهُ يَوْمًا عَلَى ذَنْبٍ فَقَالَ لَهُ أَقْصِرْ فَقَالَ خَلِّنِي وَرَبِّي أَبُعِثْتَ عَلَىَّ رَقِيبًا فَقَالَ وَاللَّهِ لاَ يَغْفِرُ اللَّهُ لَكَ أَوْ لاَ يُدْخِلُكَ اللَّهُ الْجَنَّةَ فَقُبِضَ أَرْوَاحُهُمَا فَاجْتَمَعَا عِنْدَ رَبِّ الْعَالَمِينَ فَقَالَ لِهَذَا الْمُجْتَهِدِ أَكُنْتَ بِي عَالِمًا أَوْ كُنْتَ عَلَى مَا فِي يَدِي قَادِرًا وَقَالَ لِلْمُذْنِبِ اذْهَبْ فَادْخُلِ الْجَنَّةَ بِرَحْمَتِي وَقَالَ لِلآخَرِ اذْهَبُوا بِهِ إِلَى النَّارِ قَالَ أَبُو هُرَيْرَةَ وَالَّذِي نَفْسِي بِيَدِهِ لَتَكَلَّمَ بِكَلِمَةٍ أَوْبَقَتْ دُنْيَاهُ وَآخِرَتَهُ  

[Machine] My father Abu Hurairah, O Yamamiyyu, do not say to a man, "By Allah, may Allah not forgive you" or "May Allah never admit you to Paradise." I said, "O Abu Hurairah, this is a statement that one of us says to his brother or companion when he is angry." He said, "Do not say it, for I heard the Prophet ﷺ say, 'There were two men among the Children of Israel, one of them was diligent in worship and the other was extravagant with himself. They were close friends. The diligent one would always advise the other about his faults, saying, 'O you, commit fewer sins!' He would respond, 'Leave me alone, by my Lord, have you been sent as a watcher over me?' This continued until one day he saw him committing a major sin, so he said to him, 'Woe to you, commit fewer sins!' He replied, 'Leave me alone, by my Lord, have you been sent as a watcher over me?' He said, 'By Allah, may Allah not forgive you or admit you to Paradise.' One of them said this. Allah then sent an angel to both of them, and their souls were taken. They were brought together before Allah. Allah said to the sinner, 'Go and enter Paradise by My mercy.' And He said to the other, 'Were you knowledgeable about what was in My hands? Were you capable of doing what I am able to do? Take him to the Fire.' He said, 'By the One in whose hand is the soul of Abi Qasim, he will utter a word by which his worldly life and his Hereafter will be destroyed.'"  

لِي أَبُو هُرَيْرَةَ يَا يَمَامِيُّ لَا تَقُولَنَّ لِرَجُلٍ وَاللهِ لَا يَغْفِرُ اللهُ لَكَ أَوْ لَا يُدْخِلُكَ اللهُ الْجَنَّةَ أَبَدًا قُلْتُ يَا أَبَا هُرَيْرَةَ إِنَّ هَذِهِ لَكَلِمَةٌ يَقُولُهَا أَحَدُنَا لِأَخِيهِ وَصَاحِبِهِ إِذَا غَضِبَ قَالَ فَلَا تَقُلْهَا فَإِنِّي سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ كَانَ فِي بَنِي إِسْرَائِيلَ رَجُلَانِ كَانَ أَحَدُهُمَا مُجْتَهِدًا فِي الْعِبَادَةِ وَكَانَ الْآخَرُ مُسْرِفًا عَلَى نَفْسِهِ فَكَانَا مُتَآخِيَيْنِ فَكَانَ الْمُجْتَهِدُ لَا يَزَالُ يَرَى الْآخَرَ عَلَى ذَنْبٍ فَيَقُولُ يَا هَذَا أَقْصِرْ فَيَقُولُ خَلِّنِي وَرَبِّي أَبُعِثْتَ عَلَيَّرَقِيبًا؟ قَالَ إِلَى أَنْ رَآهُ يَوْمًا عَلَى ذَنْبٍ اسْتَعْظَمَهُ فَقَالَ لَهُ وَيْحَكَ أَقْصِرْ قَالَ خَلِّنِي وَرَبِّي أَبُعِثْتَ عَلَيَّ رَقِيبًا قَالَ فَقَالَ وَاللهِ لَا يَغْفِرُ اللهُ لَكَ أَوْ لَا يُدْخِلُكَ اللهُ الْجَنَّةَ أَبَدًا قَالَ أَحَدُهُمَا قَالَ فَبَعَثَ اللهُ إِلَيْهِمَا مَلَكًا فَقَبَضَ أَرْوَاحَهُمَا وَاجْتَمَعَا عِنْدَهُ فَقَالَ لِلْمُذْنِبِ اذْهَبْ فَادْخُلِ الْجَنَّةَ بِرَحْمَتِي وَقَالَ لِلْآخَرِ أَكُنْتَ بِي عَالِمًا أَكُنْتَ عَلَى مَا فِي يَدِي قَادِرًا اذْهَبُوا بِهِ إِلَى النَّارِ قَالَ فَوَالَّذِي نَفْسُ أَبِي الْقَاسِمِ بِيَدِهِ لَتَكَلَّمَ بِكَلِمَةٍ أَوْبَقَتْ دُنْيَاهُ وَآخِرَتَهُ