Sahih Muslim Book - 1, Hadith - 336

و حَدَّثَنَا مُحَمَّدُ بْنُ رَافِعٍ حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنْ هَمَّامِ بْنِ مُنَبِّهٍ قَالَ هَذَا مَا حَدَّثَنَا أَبُو هُرَيْرَةَ عَنْ مُحَمَّدٍ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَذَكَرَ أَحَادِيثَ مِنْهَا قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ اللَّهُ عَزَّ وَجَلَّ إِذَا تَحَدَّثَ عَبْدِي بِأَنْ يَعْمَلَ حَسَنَةً فَأَنَا أَكْتُبُهَا لَهُ حَسَنَةً مَا لَمْ يَعْمَلْ فَإِذَا عَمِلَهَا فَأَنَا أَكْتُبُهَا بِعَشْرِ أَمْثَالِهَا وَإِذَا تَحَدَّثَ بِأَنْ يَعْمَلَ سَيِّئَةً فَأَنَا أَغْفِرُهَا لَهُ مَا لَمْ يَعْمَلْهَا فَإِذَا عَمِلَهَا فَأَنَا أَكْتُبُهَا لَهُ بِمِثْلِهَا وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَتْ الْمَلَائِكَةُ رَبِّ ذَاكَ عَبْدُكَ يُرِيدُ أَنْ يَعْمَلَ سَيِّئَةً وَهُوَ أَبْصَرُ بِهِ فَقَالَ ارْقُبُوهُ فَإِنْ عَمِلَهَا فَاكْتُبُوهَا لَهُ بِمِثْلِهَا وَإِنْ تَرَكَهَا فَاكْتُبُوهَا لَهُ حَسَنَةً إِنَّمَا تَرَكَهَا مِنْ جَرَّايَ وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا أَحْسَنَ أَحَدُكُمْ إِسْلَامَهُ فَكُلُّ حَسَنَةٍ يَعْمَلُهَا تُكْتَبُ بِعَشْرِ أَمْثَالِهَا إِلَى سَبْعِ مِائَةِ ضِعْفٍ وَكُلُّ سَيِّئَةٍ يَعْمَلُهَا تُكْتَبُ بِمِثْلِهَا حَتَّى يَلْقَى اللَّهَ.

Abu Hurairah narrated that Muhammad the Messenger of Allah (s.a.w) said: "Allah, the Most High, said: 'If it occurs to My slave to do a good deed, I will write down one good deed for him if he does not do it. If he does it, I will write it down tenfold. If it occurs to him to do a bad deed, I will forgive him for that if he does not do it and if he does it, I will write it down as one bad deed."' The Messenger of Allah (s.a.w) said: "The angels said: 'O Lord, there is Your slave who wants to do a bad deed,' although He had more knowledge about him. He said: 'Watch him; if he does it then write it down as one bad deed, and if he does not do it, then write down one good deed for him, for he gave it up for My sake."' The Messenger of Allah (s.a.w) said: "When the Islam of one of you is good, every good deed that he does is recorded for him between tenfold and seven-hundred fold, and every bad deed that he does is recorded as one bad deed, until he meets Allah."