Arabic (Original)
وَبِهَذَا الْإِسْنَادِ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا تَكَلَّمْتَ يَوْمَ الْجُمُعَةِ فَقَدْ لَغَوْتَ وَأَلْغَيْتَ.
English Translation
With the same chain, from the Prophet (peace be upon him): "If you speak on the day of Friday (during the sermon), you have engaged in idle talk and rendered your Friday invalid."