Sahih Muslim Book - 7, Hadith - 1988

وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى وَأَبُو بَكْرِ بْنُ أَبِى شَيْبَةَ وَأَبُو كُرَيْبٍ قَالَ يَحْيَى أَخْبَرَنَا وَقَالَ الآخَرَانِ حَدَّثَنَا أَبُو مُعَاوِيَةَ عَنِ الأَعْمَشِ عَنْ أَبِى صَالِحٍ عَنْ أَبِى هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- « مَنْ تَوَضَّأَ فَأَحْسَنَ الْوُضُوءَ ثُمَّ أَتَى الْجُمُعَةَ فَاسْتَمَعَ وَأَنْصَتَ غُفِرَ لَهُ مَا بَيْنَهُ وَبَيْنَ الْجُمُعَةِ وَزِيَادَةُ ثَلاَثَةِ أَيَّامٍ وَمَنْ مَسَّ الْحَصَى فَقَدْ لَغَا ».

It was narrated that Abu Hurairah said: "The Messenger of Allah (s.a.w) said: 'Whoever performs Wudu' and performs Wudu' well, then comes to Jumu'ah and listens attentively, will be forgiven (his sins) between that and (the next) Jumu'ah, and three days in addition to that, but whoever touches the pebbles, then he has engaged in an idle action."