Abdullah b. Umar is reported to have said that The Messenger of Allah (may peace be up on him) was standing on the pulpit when he said this:He who comes for Jumu'a he should take a bath.
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، ح وَحَدَّثَنَا ابْنُ رُمْحٍ، أَخْبَرَنَا اللَّيْثُ، عَنِ ابْنِ، شِهَابٍ عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُمَرَ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ قَالَ وَهُوَ قَائِمٌ عَلَى الْمِنْبَرِ " مَنْ جَاءَ مِنْكُمُ الْجُمُعَةَ فَلْيَغْتَسِلْ " .
Muslim
The Book of Prayer - Friday • Hadith 2