[Machine] Narrated by the Prophet ﷺ : There was a man who used to pray, and when he prostrated, another man came to him and stepped on his neck, saying, "By Allah, he will never be forgiven!" Allah تعالى said, "My servant has expressed that I will not forgive him, but I have forgiven him."  

عَنِ النَّبِيِّ ﷺ قَالَ كَانَ رَجُلٌ يُصَلِّي فَلَمَّا سَجَدَ أَتَاهُ رَجُلٌ فَوَطِئَ عَلَى رَقَبَتِهِ فَقَالَ الَّذِي تَحْتَهُ وَاللهِ لَا يُغْفَرُ لَهُ أَبَدًا فَقَالَ اللهُ ﷻ تَأَلَّى عَلَيَّ عَبْدِي أَنْ لَا أَغْفِرَ لِعَبْدِي فَإِنِّي قَدْ غَفَرْتُ لَهُ  

[Machine] A man passed by another man who was prostrating, and he stepped on his neck. He said, "Do you step on my neck while I am prostrating? By Allah, Allah will never forgive you." Allah said, "Are you trying to arrogate yourself over me? Indeed, I have forgiven him."  

أَنَّ رَجُلًا مَرَّ بِرَجُلٍ وَهُوَ سَاجِدٌ فَوَطِئَ عَلَى رَقَبَتِهِ فَقَالَ أَتَطَأُ عَلَى رَقَبَتِي وَأَنَا سَاجِدٌ؟ وَاللهِ لَا يَغْفِرُ اللهُ لَكَ أَبَدًا فَقَالَ اللهُ أَتَتَأَلَّى عَلَيَّ أَمَا إِنِّي قَدْ غَفَرْتُ لَهُ  

Allah would not forgive such and such (person). Thereupon Allah the Exalted and Glorious, said: Who is he who adjures about Me that I would not grant pardon to so and so; I have granted pardon to so and so and blotted out his deeds (who took an oath that I would not grant pardon to him). (Using translation from Muslim 2621)   

قَالَ رَسُولُ اللهِ ﷺ قَالَ رَجُلٌ وَاللهِ لَا يَغْفِرُ اللهُ لِفُلَانٍ فَقَالَ اللهُ ﷻ مَنْ ذَا الَّذِي يَتَأَلَّى عَلَيَّ أَنْ لَا أَغْفِرَ لِفُلَانٍ فَإِنِّي قَدْ غَفَرْتُ لِفُلَانٍ وَأَحْبَطْتُ عَمَلَكَ