I heard the Prophet ﷺ saying, "If somebody commits a sin and then says, 'O my Lord! I have sinned, please forgive me!' and his Lord says, 'My slave has known that he has a Lord who forgives sins and punishes for it, I therefore have forgiven my slave (his sins).' Then he remains without committing any sin for a while and then again commits another sin and says, 'O my Lord, I have committed another sin, please forgive me,' and Allah says, 'My slave has known that he has a Lord who forgives sins and punishes for it, I therefore have forgiven my slave (his sin). Then he remains without Committing any another sin for a while and then commits another sin (for the third time) and says, 'O my Lord, I have committed another sin, please forgive me,' and Allah says, 'My slave has known that he has a Lord Who forgives sins and punishes for it I therefore have forgiven My slave (his sin), he can do whatever he likes."  

سَمِعْتُ النَّبِيَّ ﷺ قَالَ إِنَّ عَبْدًا أَصَابَ ذَنْبًا وَرُبَّمَا قَالَ أَذْنَبَ ذَنْبًا فَقَالَ رَبِّ أَذْنَبْتُ وَرُبَّمَا قَالَ أَصَبْتُ فَاغْفِرْ لِي فَقَالَ رَبُّهُ أَعَلِمَ عَبْدِي أَنَّ لَهُ رَبًّا يَغْفِرُ الذَّنْبَ وَيَأْخُذُ بِهِ غَفَرْتُ لِعَبْدِي ثُمَّ مَكَثَ مَا شَاءَ اللَّهُ ثُمَّ أَصَابَ ذَنْبًا أَوْ أَذْنَبَ ذَنْبًا فَقَالَ رَبِّ أَذْنَبْتُ أَوْ أَصَبْتُ آخَرَ فَاغْفِرْهُ فَقَالَ أَعَلِمَ عَبْدِي أَنَّ لَهُ رَبًّا يَغْفِرُ الذَّنْبَ وَيَأْخُذُ بِهِ غَفَرْتُ لِعَبْدِي ثُمَّ مَكَثَ مَا شَاءَ اللَّهُ ثُمَّ أَذْنَبَ ذَنْبًا وَرُبَّمَا قَالَ أَصَابَ ذَنْبًا قَالَ قَالَ رَبِّ أَصَبْتُ أَوْ أَذْنَبْتُ آخَرَ فَاغْفِرْهُ لِي فَقَالَ أَعَلِمَ عَبْدِي أَنَّ لَهُ رَبًّا يَغْفِرُ الذَّنْبَ وَيَأْخُذُ بِهِ غَفَرْتُ لِعَبْدِي ثَلاَثًا فَلْيَعْمَلْ مَا شَاءَ