He who took a bath and then came for Jumu'a prayer and then prayed what was fixed for him, then kept silence till the Imam finished the sermon, and then prayed along with him, his sins between that time and the next Friday would be forgiven, and even of three days more.  

عَنِ النَّبِيِّ ﷺ قَالَ مَنِ اغْتَسَلَ ثُمَّ أَتَى الْجُمُعَةَ فَصَلَّى مَا قُدِّرَ لَهُ ثُمَّ أَنْصَتَ حَتَّى يَفْرُغَ مِنْ خُطْبَتِهِ ثُمَّ يُصَلِّيَ مَعَهُ غُفِرَ لَهُ مَا بَيْنَهُ وَبَيْنَ الْجُمُعَةِ الأُخْرَى وَفَضْلَ ثَلاَثَةِ أَيَّامٍ  

If anyone performs ablution, doing it well, then come to the Friday prayer, listens and keeps silence, his sins between that time and the next Friday will be forgiven, with three days extra; but he who touches pebbles has caused an interruption. (Using translation from Abū Dāʾūd 1050)   

قَالَ رَسُولُ اللَّهِ ﷺ «مَنْ تَوَضَّأَ يَوْمَ الْجُمُعَةِ فَأَحْسَنَ الْوُضُوءَ ثُمَّ أَتَى الْجُمُعَةَ فَدَنَا وَأَنْصَتَ وَاسْتَمَعَ غَفَرَ اللَّهُ لَهُ مَا بَيْنَهُ وَبَيْنَ الْجُمُعَةِ الْأُخْرَى وَزِيَادَةَ ثَلَاثَةِ أَيَّامٍ»  

"مَنِ اغْتَسَلَ يَوْمَ الْجُمُعَةِ فَأَحْسَنَ غُسْلَهُ، ثُمَّ مَسَّ مِنْ طِيبِ بَيتِه، وادَّهَن من دُهْنِهِ، وَلَبِسَ مِنْ ثِيَابِهِ، ثُمَّ أَتَى الْجُمُعَةَ فَلَمْ يُفرِّق بَينَ اثْنَينِ، وَصَلَّى مَا كْتِبَ لَهُ فَإِذَا خَرَجَ الإِمَامُ أَنْصَتَ ثُمَّ اسْتَمَعَ غُفِرَ لَهُ ما بِينَهُ وَبَينَ الْجُمُعَةِ الأُخْرَى".