O Allah, forgive me my sins, and Allah (the Exalted and Glorious) said: My servant commited a sin and then he came to realise that he has a Lord Who forgives the sins and takes to account (the sinner) for the sin. He then again committed a sin and said: My Lord, forgive me my sin, and Allah, the Exalted and High, said: My servant committed a sin and then came to realise that he has a Lord Who would forgive his sin or would take (him) to account for the sin. He again committed a sin and said: My Lord, forgive me for my sin, and Allah (the Exalted and High) said: My servant sas committed a sin and then came to realise that he has a Lord Who forgives the sins or takes (him) to account for sin. O servant, do what you like. I have granted you forgiveness. 'Abd al-A'la said: I do not know whether he said thrice or four times to do" what you desire".  

عَنِ النَّبِيِّ ﷺ فِيمَا يَحْكِي عَنْ رَبِّهِ ﷻ قَالَ أَذْنَبَ عَبْدٌ ذَنْبًا فَقَالَ اللَّهُمَّ اغْفِرْ لِي ذَنْبِي فَقَالَ تَبَارَكَ وَتَعَالَى أَذْنَبَ عَبْدِي ذَنْبًا فَعَلِمَ أَنَّ لَهُ رَبًّا يَغْفِرُ الذَّنْبَ وَيَأْخُذُ بِالذَّنْبِ ثُمَّ عَادَ فَأَذْنَبَ فَقَالَ أَىْ رَبِّ اغْفِرْ لِي ذَنْبِي فَقَالَ تَبَارَكَ وَتَعَالَى عَبْدِي أَذْنَبَ ذَنْبًا فَعَلِمَ أَنَّ لَهُ رَبًّا يَغْفِرُ الذَّنْبَ وَيَأْخُذُ بِالذَّنْبِ ثُمَّ عَادَ فَأَذْنَبَ فَقَالَ أَىْ رَبِّ اغْفِرْ لِي ذَنْبِي فَقَالَ تَبَارَكَ وَتَعَالَى أَذْنَبَ عَبْدِي ذَنْبًا فَعَلِمَ أَنَّ لَهُ رَبًّا يَغْفِرُ الذَّنْبَ وَيَأْخُذُ بِالذَّنْبِ وَاعْمَلْ مَا شِئْتَ فَقَدْ غَفَرْتُ لَكَ قَالَ عَبْدُ الأَعْلَى لاَ أَدْرِي أَقَالَ فِي الثَّالِثَةِ أَوِ الرَّابِعَةِ اعْمَلْ مَا شِئْتَ  

The hadlth has been narrated on the authority of 'Abd al-A'la b. Hammad with the same chain of transmitters.  

حَدَّثَنَا عَبْدُ الأَعْلَى بْنُ حَمَّادٍ النَّرْسِيُّ بِهَذَا الإِسْنَادِ  

Abu Huraira reported lie heard Messenger of Allah ﷺ as saying that a servant committed a sin. The rest of the hadith is the same, but there is a slight variation of wording.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ إِنَّ عَبْدًا أَذْنَبَ ذَنْبًا بِمَعْنَى حَدِيثِ حَمَّادِ بْنِ سَلَمَةَ وَذَكَرَ ثَلاَثَ مَرَّاتٍ أَذْنَبَ ذَنْبًا وَفِي الثَّالِثَةِ قَدْ غَفَرْتُ لِعَبْدِي فَلْيَعْمَلْ مَا شَاءَ  

from the Messenger of Allah ﷺ who said, "Allah ﷻ stretches out His Hand during the night to accept the repentance of the sinners of the day, and stretches out His Hand during the day to accept the repentance of the sinners of the night. ˹This will continue˺ until the sun rises from the west.  

عَنِ النَّبِيِّ ﷺ قَالَ: «إِنَّ اللَّهَ ﷻ يَبْسُطُ يَدَهُ بِاللَّيْلِ لِيَتُوبَ مُسِيءُ النَّهَارِ، وَيَبْسُطُ يَدَهُ بِالنَّهَارِ لِيَتُوبَ مُسِيءُ اللَّيْلِ, حَتَّى تَطْلُعَ الشَّمْسُ مِنْ مَغْرِبِهَا۔»