حَدَّثَنَا عَبْدُ الْوَهَّابِ بْنُ عَبْدِ الْحَكَمِ الْخَزَّازُ، أَخْبَرَنَا عَبْدُ الْمَجِيدِ بْنُ عَبْدِ الْعَزِيزِ بْنِ أَبِي رَوَّادٍ، عَنِ ابْنِ جُرَيْجٍ، عَنِ الْمُطَّلِبِ بْنِ عَبْدِ اللَّهِ بْنِ حَنْطَبٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏عُرِضَتْ عَلَىَّ أُجُورُ أُمَّتِي حَتَّى الْقَذَاةُ يُخْرِجُهَا الرَّجُلُ مِنَ الْمَسْجِدِ وَعُرِضَتْ عَلَىَّ ذُنُوبُ أُمَّتِي فَلَمْ أَرَ ذَنْبًا أَعْظَمَ مِنْ سُورَةٍ مِنَ الْقُرْآنِ أَوْ آيَةٍ أُوتِيَهَا رَجُلٌ ثُمَّ نَسِيَهَا ‏"

Narrated Anas ibn Malik

The rewards of my people were presented to me, even the mote that a man removes from the mosque. And the sins of my people were presented to me, and I did not see any sin greater than a surah or an ayat of the Quran that was given to a man, then he forgot it.